Materiały źródłowe

• #1 What Is Prader-Willi Syndrome? – Symptoms and Causes

  https://www.pwsausa.org/what-is-prader-willi-syndrome/

  Prader-Willi syndrome (PWS) is a rare genetic disorder characterized by chronic hunger, growth hormone deficiency, and behavior challenges. […] Key challenges emerge related to eating, learning, and behavior. […] Insatiable Hunger: Beginning around age 8, leading to weight gain if not managed. […] Ongoing Hunger: Preventing obesity is important for people with PWS. […] Obesity, hypotonia, and hypothalamic dysfunction are the main medical problems related to Prader-Willi syndrome. […] The main problem for people with this condition is extreme hunger, which can cause dangerous obesity. […] PWS varies from person to person but commonly affects the brain, particularly the hypothalamus. This leads to symptoms like: Weak muscle tone (hypotonia) from birth. […] Overeating (hyperphagia) due to the brain not signaling fullness, potentially causing severe obesity. This starts between 2-4 years old.

• #1 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  Prader-Willi (PRAH-dur VIL-e) syndrome is a rare genetic condition that leads to physical, mental and behavioral problems. A key feature of Prader-Willi syndrome is a sense of being hungry all the time. […] People with Prader-Willi syndrome want to eat all the time because they never feel full. This is called hyperphagia. As a result, they usually find it hard to manage their weight. Many complications of Prader-Willi syndrome are due to obesity. […] Symptoms of Prader-Willi syndrome, which can vary, slowly change over time from childhood to adulthood. […] Symptoms that may be present from birth include: Poor muscle tone. A main sign during infancy is poor muscle tone, also known as hypotonia. Babies may rest with their elbows and knees loosely extended instead of fixed. They also may feel floppy or like rag dolls when they’re held.

• #1 Prader-Willi Syndrome: Symptoms, Causes, and Treatments

  https://www.webmd.com/parenting/baby/prader-willi-syndrome

  Prader-Willi syndrome (PWS) is a rare, complicated condition that affects many parts of your body. It can cause physical issues, like extreme hunger and weak muscles, as well as learning and behavioral problems. […] A baby may show signs of PWS early on. They may have almond-shaped eyes, their head may get narrow at the temples, their mouth might turn down at the corners, and they might have a thin upper lip. […] In early childhood, kids with PWS start to show other signs. It affects a part of their brain called the hypothalamus — this is what tells you you’re full when you eat enough food. People with PWS don’t get the feeling of being full, so the most common signs are nonstop hunger and weight gain. […] A child with PWS may always want more food, eat big portions, or try to hide or store food to eat later.

• #1 Prader-Willi Syndrome: Symptoms & Causes

  https://my.clevelandclinic.org/health/diseases/21016-prader-willi-syndrome

  Prader-Willi syndrome is a rare genetic condition that affects a childs metabolism and causes changes to their body and behavior. They have severe low muscle tone and poor feeding during early infancy, followed by a tremendous appetite that develops between 2 and 6 years of age. This can lead to severe obesity if excessive eating isnt managed. […] PWS typically also causes a delay in childhood milestones and puberty. Although rare, life-threatening complications can occur and include respiratory illnesses, obesity-related cardiovascular problems, sleep apnea and diabetes. […] Symptoms that affect your childs body may be present at birth but become more apparent as they grow. These may include: Almond-shaped eyes, A long, narrow head, A triangular mouth, Short height, Small hands and feet, Underdeveloped genitals.

• #1 Prader-Willi syndrome | healthdirect

  https://www.healthdirect.gov.au/prader-willi-syndrome

  Prader-Willi syndrome (PWS) is a rare genetic condition. […] Although there is no cure for PWS, early treatment help with symptoms. […] In babies and young children, signs of PWS can include: a weak cry, difficulty sucking to feed, low muscle tone (floppiness), sleeping more than normal. […] Older children, teenagers and adults may have other symptoms and signs. […] Physical features of PWS can include: being short for your age, small hands and feet, small genitals, distinctive facial features (including a high and narrow forehead, a thin upper lip and downturned mouth, almond-shaped eyes, and eyes that look in different directions), lighter skin and hair than other people in the family, very flexible muscles, scoliosis (curved spine) or other spinal problems. […] Other features can include: an insatiable (limitless) appetite from about 2 years of age, food cravings and weight gain, developmental delays, including speech problems and delayed social and emotional skills, mild to moderate intellectual disability, behavioural problems, mental health problems.

• #1 Stages of PWS – Prader-Willi Syndrome Association NZ

  https://www.pws.org.nz/about-pws/stages-of-pws

  In the past, PWS was described as a 2 stage syndrome failure to thrive (poor feeding and slow growth) followed by hyperphagia (increased appetite). […] After observing that the changes in appetite and weight gain which occur in PWS are more gradual and complex than traditionally described, a research team investigated and presented an updated clinical description of the nutritional phases of PWS. […] 0 prenatal-birth Decreased fetal movements and lower birth weight than siblings […] 1a 0-9 months Hypotonia with difficulty feeding and decreased appetite […] 1b 9-25 months Improved feeding and appetite; growing appropriately […] 2a 2.1-4.5 years Weight increasing without appetite increase or excess calories […] 2b 4.5 8 years Increased appetite and interest in food, but can feel full

• #1 Prader-Willi Syndrome: Symptoms, warning signs, and causes

  https://www.medicalnewstoday.com/articles/182287

  Prader-Willi syndrome is a rare condition that causes physical, mental, and behavioral problems. An unrelenting feeling of hunger is common. […] A person with Prader-Willi Syndrome (PWS) has extreme difficulty controlling their body weight, as they spend a long time eating and have a powerful compulsion to eat as much food as possible. […] People with PWS have seven genes on chromosome 15 that are either deleted or inactive. […] They will often have low muscle tone, incomplete sexual development, and chronic hunger. […] Individuals start developing a strong appetite called hyperphagia between 2 and 5 years of age and sometimes later. […] This characteristic occurs due to a significantly decreased feeling of fullness after eating. Once hyperphagia begins, it tends to be a lifelong condition.

• #1 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  A classic sign of Prader-Willi syndrome is a craving for food all the time, starting in early childhood. Being hungry all the time leads to eating often and eating large portions. This leads to quick weight gain. Unusual food-seeking behaviors, such as hoarding food, or eating frozen food or garbage, may occur. […] A condition called hypogonadism occurs when sex organs testes in males and ovaries in females produce little or no sex hormones. This leads to sex organs that don’t develop fully and incomplete or delayed puberty. Nearly all people with Prader-Willi syndrome aren’t able to get pregnant. Without treatment, females may not start their menstrual period until their 30s, or they may never have a period. Males may not have much facial hair, and their voices may never fully deepen. […] Not making enough growth hormone can shorten adult height and lead to low muscle mass and high body fat. Other endocrine problems may include not making enough thyroid hormone, also known as hypothyroidism. Another endocrine problem is central adrenal insufficiency, which keeps the body from responding properly to stress or infections.

• #1 Prader-Willi Syndrome – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553161/

  Prader-Willi syndrome is a rare and complex genetic disorder that impacts the metabolic, endocrine, and neurologic systems. The syndrome manifests with severe hypotonia and feeding difficulties during the early years of life, leading to global developmental delays. […] Patients with Prader-Willi syndrome often exhibit behavioral and intellectual challenges. The syndrome is characterized by recognizable facial features, strabismus (crossed eyes), and musculoskeletal abnormalities. […] Patients display short stature and growth deceleration, failing to achieve the typical puberty growth spurt. […] The progression leading to the hallmark hyperphagia and obesity in Prader-Willi syndrome can be described in 4 phases. […] In Prader-Willi syndrome, central obesity is typical, leading to significant complications and increased morbidity and mortality.

• #1 Prader-Willi Syndrome: Symptoms & Causes

  https://my.clevelandclinic.org/health/diseases/21016-prader-willi-syndrome

  Additional symptoms that affect your childs development and behavior include: Temper tantrums, emotional outbursts or stubbornness, Problems with cognitive development (intellectual disability), Obsessive or compulsive behaviors like skin picking, Sleep abnormalities, Eating challenges like not feeling satisfied after eating or eating an unusually large amount of food (hyperphagia). […] Hyperphagia may lead to class III obesity, which increases the likelihood of other complications, such as diabetes and heart disease. […] Many people with Prader-Willi syndrome develop obesity from overeating. Complications from obesity may include: Cardiac (heart) problems, Diabetes (Type 2), Hypertension (high blood pressure), Respiratory (lung) problems, Sleep apnea (interrupted breathing during sleep).

• #1

  https://www.nhs.uk/conditions/prader-willi-syndrome/symptoms/

  Prader-Willi syndrome can cause a wide range of symptoms, and affect a person’s physical, psychological and behavioural development. […] Floppiness caused by weak muscles is usually noticed shortly after birth. The medical name for this is hypotonia. […] Children with Prader-Willi syndrome experience puberty later than usual and may not go through full development into an adult. […] People with Prader-Willi syndrome develop an increased appetite and eat an excessive amount of food if they have the opportunity. The medical name for this is hyperphagia. […] Most people with Prader-Willi syndrome have mild to moderate learning difficulties with a low IQ. […] Children with Prader-Willi syndrome are usually much shorter than other children of their own age. This is usually apparent by the time they’re 2 years old.

• #1 Prader-Willi Syndrome: Symptoms, Causes, and Treatments

  https://www.webmd.com/parenting/baby/prader-willi-syndrome

  Your child may also: Be short for their age, Have small hands or feet, Have extra body fat and not enough muscle mass, Have sex organs that may not develop, Have mild to moderate learning problems, Be slow to learn to talk, sit, stand, or walk, Have temper tantrums, Pick at their skin, Have sleep problems, Have mood and speech problems, Have scoliosis — a curved spine, Have too little thyroid or growth hormones. […] Because their sex organs don’t develop, women with PWS may never get a period. Or they may start their periods much later than others. Men who have PWS may not have facial hair. They may have small sex organs, and their voices may not change in puberty. People who have PWS usually aren’t able to have children.

• #1 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  A common feature of Prader-Willi syndrome is having mild to moderate problems thinking, reasoning and problem-solving. This is called cognitive impairment. Even children and adults without cognitive impairment may have learning disabilities. […] Toddlers with Prader-Willi syndrome often reach milestones in physical movement, such as sitting up or walking, later than other children. […] Speech often is delayed. Having a hard time choosing words and speaking clearly may continue as an adult. […] At times, children and adults may be very stubborn, angry, controlling or manipulative. They may throw temper tantrums, especially when denied food. They may not accept changes in routine. Also, they may start to show obsessive-compulsive or repetitive behaviors, or both. Other mental health conditions, such as anxiety and skin picking, may occur.

• #1 What is Prader-Willi Syndrome

  https://www.fpwr.org/what-is-prader-willi-syndrome

  In addition to obesity, a variety of other symptoms can be associated with PWS. Individuals usually exhibit cognitive challenges, with measured IQs ranging from low normal to moderate intellectual disability. Those with normal IQs usually exhibit learning disabilities. Other issues may include growth hormone deficiency/short stature, small hands and feet, scoliosis, sleep disturbances with excessive daytime sleepiness, high pain threshold, speech apraxia/dyspraxia, and infertility. Behavioral difficulties may include obsessive-compulsive symptoms, skin picking, and difficulty controlling emotions. Adults with PWS are at increased risk for mental illness. However, PWS symptoms vary in severity and occurrence among individuals. […] The symptoms change over time in individuals with PWS.

• #1 Prader-Willi Syndrome: Symptoms & Causes

  https://my.clevelandclinic.org/health/diseases/21016-prader-willi-syndrome

  With early and ongoing treatment, many individuals with Prader-Willi syndrome have a normal lifespan. Needing extra help in school is common. Each person with PWS needs lifelong support to achieve as much independence as possible. […] If you notice your child has signs of Prader-Willi syndrome, visit their healthcare provider. Its especially important to see their provider if they miss developmental milestones during infancy.

• #1 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  Children and adults with Prader-Willi syndrome may have sleep conditions, including disruptions of the typical sleep cycle. They also may have sleep apnea, which is when breathing pauses during sleep. These conditions can make them very sleepy during the day and worsen behavior problems. […] These symptoms may include small hands and feet, and curvature of the spine, also known as scoliosis. They also may have hip problems, less saliva flow, dental problems, and nearsightedness and other vision problems. Other symptoms include a lack of pigment, also known as hypopigmentation, which causes hair, eyes and skin to be pale. They also may have problems controlling their body temperature. They may be able to handle more pain than the average person.

• #1 Prader-Willi Syndrome | Cardinal Glennon

  https://www.ssmhealth.com/cardinal-glennon/services/pediatric-orthopedics/prader-willi-syndrome

  Poor muscle tone, also called hypotonia, is usually detected at birth or in early infancy, but can also be suspected when there is little movement of the baby while in the womb. […] Common in children with PWS, flat feet are typically the result of overly flexible ligaments and poor muscle tone. […] Both children and adults with PWS may have decreased bone strength. This can lead to fractures or complicate healing after a bone surgery, such as a spinal fusion. […] Problems in the hip joint can occur when the hip socket develops abnormally and is not aligned or too shallow for the ball of the thigh bone to connect properly. […] Scoliosis is a side-to-side curve of the spine, which if severe, can cause major problems, including breathing difficulty and heart problems. An estimated 60-70% of PWS patients will develop a spine deformity.

• #1 Prader-Willi Syndrome (PWS): Symptoms & Causes | NewYork-Presbyterian

  https://www.nyp.org/pediatrics/prader-willi-syndrome

  Prader-Willi syndrome is a rare genetic disorder that affects many body parts as children grow and develop, and symptoms include poor muscle tone and short stature. […] Children with Prader-Willi syndrome also develop insatiable hunger and cant feel full. Overeating due to this excessive appetite can lead to life-threatening obesity. […] Prader-Willi syndrome varies according to the timing and severity of symptoms. Some of the most troublesome symptoms of Prader-Willi syndrome have to do with eating, appetite and obesity. […] A constant feeling of hunger sets in. The inability to feel full leads to frequent eating, large portions, and rapid weight gain to the point of obesity if not managed. […] Prader-Willi syndrome is a lifelong condition with different symptoms and increased risk of complications over time. Symptoms and their severity vary from one person to another. […] Overwhelming hunger, and inability to feel full, that can lead to life-threatening obesity. […] The insatiable hunger felt by people with Prader-Willi syndrome leads to overeating and obesity, that is sometimes life-threatening.

• #1 Prader-Willi Syndrome | Riley Children’s Health

  https://www.rileychildrens.org/health-info/prader-willi-syndrome

  Prader-Willi syndrome is a rare and complex genetic condition. Babies born with this condition will usually have poor muscle tone and a weak cry. […] Children with Prader-Willi syndrome may take a long time to feed and gain weight slowly. Typically by the time a child with Prader-Willi syndrome reaches 2 or 3 years of age, he or she will have a dramatic increase in appetite and begin to overeat, leading to rapid weight gain and eventually obesity. […] The symptoms of Prader-Willi syndrome include: Slow feeding during infancy, Weak cry at birth, Insatiable appetite beginning around the age of 2 or 3, Rapid weight gain beginning around the age of 2 or 3, Obesity, Low muscle tone which may be profound in infancy, Small hands and feet, Short stature, Intellectual disability, Behavioral issues. […] The most common symptoms of Prader-Willi syndrome are low muscle tone and a tendency to overeat. […] There is no cure for Prader-Willi syndrome. […] The symptoms can be treated with dietary interventions, behavioral interventions and/or hormone therapy.

• #1 Prader-Willi syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice

  https://bestpractice.bmj.com/topics/en-gb/3000311

  Patients with PWS have a shorter life expectancy than the general population, mainly due to complications of hyperphagia and obesity. However, with effective weight control management, patients with PWS may live into their seventh decade. […] Key diagnostic factors include central hypotonia, poor suck, weak cry, feeding difficulties, hypogonadism, weight gain and hyperphagia. […] Other diagnostic factors include developmental delay, cognitive disability, endocrine disorders, sleep abnormalities, behavioural abnormalities, psychiatric disorders, short stature, small hands and feet, hypopigmentation, ocular problems, spinal deformities, polyhydramnios, decreased fetal movements, developmental dysplasia of the hip, seizures, and premature adrenarche.

• #1 Prader-Willi Syndrome: Life Expectancy, Prevention, and More

  https://www.healthline.com/health/prader-willi-syndrome-life-expectancy

  Respiratory failure is the most common cause of death, responsible for up to half of the deaths of both children and adults with PWS. […] According to the National Health Service (NHS) in the United Kingdom, the risk of early death may increase If a person eats excessively (hyperphagia), gains weight, and develops health conditions related to obesity. […] One of the biggest risk factors for early death is obesity. […] More specifically, compulsive eating is a significant predictor of early death. Treatment that reduces the drive to eat may help with this symptom and prevent occurrences such as choking and obesity that lead to accidents and health complications. […] There is no cure for PWS. However, with advances in treatment and management, the death rate has been decreasing by around 1.25% per year. […] PWS itself does not shorten a persons life expectancy. Early diagnosis and appropriate treatment may prevent associated complications from becoming life threatening.

• #1 How is Prader-Willi Syndrome Characterised? – Prader-Willi Syndrome Association of Victoria, Australia

  https://pwsavic.org.au/information/how-is-prader-willi-syndrome-characterised/

  PWS can have a significant impact on behaviour, learning, mental and physical health, community inclusion and social relationships. People with PWS exhibit high anxiety, complex and challenging behaviours and cognitive dysfunction throughout their lives. […] Severe medical complications can develop rapidly in individuals with PWS. Often the severity of a clinical symptom may be underestimated until the condition warrants immediate attention. Therefore caution should be taken in interpreting a seemingly minor complaint in someone with Prader-Willi Syndrome. […] There is no way to predict which symptoms will occur in any particular individual, or to what degree. We do know that all children with PWS benefit from early intervention, a loving and enriching environment.

• #1 Prader–Willi syndrome – Wikipedia

  https://en.wikipedia.org/wiki/Prader%E2%80%93Willi_syndrome

  Obesity is a common issue associated with PWS. […] Individuals with PWS are obese with short stature, abnormal body composition, reduced fat-free mass, reduced lean body mass and total energy expenditure, and decreased bone density. […] PWS is characterized by hypogonadism. […] PWS has no cure. […] Treatment may improve outcomes, especially if carried out early. […] Daily recombinant growth hormone (GH) injections are indicated for children with PWS. […] The largest problem associated with the syndrome is severe obesity. […] Access to food must be strictly supervised and limited, usually by installing locks on all food-storage places, including refrigerators.

• #1 Prader-Willi Homes | What is Prader-Willi Syndrome

  https://www.pwho.com/what-is-prader-willi-syndrome/

  Insatiable appetite (hyperphagia), compulsive eating and obsession with food. […] Obesity (resulting from hyperphagia, hypotonia, need for fewer calories and decreased metabolism). […] Learning disabilities or cognitive delays (in the mild-moderate range, with an average IQ in the 70s and ranging between 35-105). […] Speech and language problems. […] Poor social skills/interactions. […] Individuals diagnosed with Prader-Willi syndrome do much better in a highly structured living environment. […] Carefully controlled diets, structured access to food, and regular exercise are central to managing weight gain. […] Though individuals diagnosed with Prader-Willi syndrome have multiple and complex needs, the prognosis and treatment is favorable when done in a structured setting.

• #1 What Is Prader-Willi Syndrome? Symptoms, Causes, Diagnosis, Treatment, and Prevention

  https://www.everydayhealth.com/prader-willi-syndrome/guide/

  With the right treatment, they can live as long as their peers. Yet they will need a lot of support from their families and a variety of professionals to remain independent and have a good quality of life. […] Although there are treatments to manage the symptoms of Prader-Willi syndrome, right now there is no cure. This is a lifelong condition.

• #2 Prader-Willi Syndrome | Cardinal Glennon

  https://www.ssmhealth.com/cardinal-glennon/services/pediatric-orthopedics/prader-willi-syndrome

  Prader-Willi syndrome (PWS) is a rare genetic disorder, affecting 1 in 10,000 to 1 in 30,000 babies born. It is, however, the most common genetic cause of severe obesity. […] Babies with PWS may kick less than normal while in the womb. They often are born past their due date and require a C-section delivery. Newborns typically show very low muscle tone and are often described as floppy. They might have difficulty breathing and may need extra oxygen or have difficulty eating and seem too weak to breastfeed or drink from a bottle. Such breathing and feeding issues usually delay a baby from going home from the hospital by weeks or even months. […] Later developmental milestones such as sitting, standing, and walking are significantly delayed. Children with PWS do not start walking, on average, until they are 27 to 29 months old. With the early use of growth hormone medication, though, children start to walk in about 18 months.

• #2

  https://www.nhs.uk/conditions/prader-willi-syndrome/symptoms/

  Prader-Willi syndrome can cause a wide range of symptoms, and affect a person’s physical, psychological and behavioural development. […] Floppiness caused by weak muscles is usually noticed shortly after birth. The medical name for this is hypotonia. […] Children with Prader-Willi syndrome experience puberty later than usual and may not go through full development into an adult. […] People with Prader-Willi syndrome develop an increased appetite and eat an excessive amount of food if they have the opportunity. The medical name for this is hyperphagia. […] Most people with Prader-Willi syndrome have mild to moderate learning difficulties with a low IQ. […] Children with Prader-Willi syndrome are usually much shorter than other children of their own age. This is usually apparent by the time they’re 2 years old.

• #2 What are the symptoms of Prader-Willi syndrome (PWS)? | NICHD – Eunice Kennedy Shriver National Institute of Child Health and Human Development

  http://www.nichd.nih.gov/health/topics/prader-willi/conditioninfo/symptoms

  Scientists think that the symptoms of PWS may be caused by a problem in a portion of the brain called the hypothalamus. Individuals with PWS may have mild to severe symptoms. An important early symptom of PWS is an infant’s inability to suck, which affects the ability to feed. Nearly all infants with PWS need help with feeding. Feeding and metabolic symptoms persist into adulthood. Because of their inability to stop eating, people with PWS are at increased risk for diabetes, trouble breathing during sleep, and other health risks. Many physical symptoms of PWS arise from poor regulation of various hormones, including growth hormone, thyroid hormone, and possibly adrenalin. Individuals with PWS grow slowly and experience delays in reaching physical activity milestones. Children with PWS tend to be substantially shorter than other children of similar age. Individuals with PWS have varying levels of intellectual disabilities. Learning disabilities are common, as are delays in starting to talk and in the development of language. Behavioral problems may include temper tantrums, extreme stubbornness, obsessive-compulsive symptoms, picking the skin, and general trouble in controlling emotions. The appearance of PWS symptoms occurs in two recognized stages: Stage 1 (Infancy to age 2 years) includes „Floppiness” and poor muscle tone, weak cries and a weak sucking reflex, inability to breastfeed, which may require feeding support, developmental delays, and small genital organs. Stage 2 (Ages 2 to 8) includes inability to feel satisfied with normal intake of food, inability to control eating, which can lead to overeating if not monitored, food-seeking behaviors, low metabolism, weight gain and obesity, daytime sleepiness and sleep problems, intellectual disabilities, small hands and feet, short stature, curvature of the spine (scoliosis), high pain threshold, behavioral problems, including the display of obsessive-compulsive symptoms, picking the skin, and difficulty controlling emotions, and small genitals, often resulting in infertility in later life.

• #2 Prader-Willi Syndrome: Symptoms, Causes, and Treatments

  https://www.webmd.com/parenting/baby/prader-willi-syndrome

  Prader-Willi syndrome (PWS) is a rare, complicated condition that affects many parts of your body. It can cause physical issues, like extreme hunger and weak muscles, as well as learning and behavioral problems. […] A baby may show signs of PWS early on. They may have almond-shaped eyes, their head may get narrow at the temples, their mouth might turn down at the corners, and they might have a thin upper lip. […] In early childhood, kids with PWS start to show other signs. It affects a part of their brain called the hypothalamus — this is what tells you you’re full when you eat enough food. People with PWS don’t get the feeling of being full, so the most common signs are nonstop hunger and weight gain. […] A child with PWS may always want more food, eat big portions, or try to hide or store food to eat later.

• #2 Signs & Symptoms Of Prader-Willi Syndrome | Special Olympics Arizona

  https://specialolympicsarizona.org/prader-willi-syndrome-symptoms/

  Signs of Prader-Willi Syndrome in Infants […] Signs and symptoms of Prader-Willi syndrome that may be present from birth include: […] Hypotonia […] Hypotonia, or poor muscle tone, is one of the main signs of Prader-Willi syndrome during infancy. Babies may rest with their elbows and knees loosely extended instead of in a fixed position. When held, babies with poor muscle tone may feel floppy, like rag dolls. Decreased muscle tone may also make it difficult for babies to suck, resulting in feeding difficulties in infancy. […] Physical Characteristics […] Babies with Prader-Willi may have recognizable physical characteristics, especially unique facial features. Babies may be born with almond-shaped eyes and a narrowing of the head at the temples. They may also have a turned-down mouth and a very thin upper lip.

• #2 Stages of PWS – Prader-Willi Syndrome Association NZ

  https://www.pws.org.nz/about-pws/stages-of-pws

  In the past, PWS was described as a 2 stage syndrome failure to thrive (poor feeding and slow growth) followed by hyperphagia (increased appetite). […] After observing that the changes in appetite and weight gain which occur in PWS are more gradual and complex than traditionally described, a research team investigated and presented an updated clinical description of the nutritional phases of PWS. […] 0 prenatal-birth Decreased fetal movements and lower birth weight than siblings […] 1a 0-9 months Hypotonia with difficulty feeding and decreased appetite […] 1b 9-25 months Improved feeding and appetite; growing appropriately […] 2a 2.1-4.5 years Weight increasing without appetite increase or excess calories […] 2b 4.5 8 years Increased appetite and interest in food, but can feel full

• #2 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  A classic sign of Prader-Willi syndrome is a craving for food all the time, starting in early childhood. Being hungry all the time leads to eating often and eating large portions. This leads to quick weight gain. Unusual food-seeking behaviors, such as hoarding food, or eating frozen food or garbage, may occur. […] A condition called hypogonadism occurs when sex organs testes in males and ovaries in females produce little or no sex hormones. This leads to sex organs that don’t develop fully and incomplete or delayed puberty. Nearly all people with Prader-Willi syndrome aren’t able to get pregnant. Without treatment, females may not start their menstrual period until their 30s, or they may never have a period. Males may not have much facial hair, and their voices may never fully deepen. […] Not making enough growth hormone can shorten adult height and lead to low muscle mass and high body fat. Other endocrine problems may include not making enough thyroid hormone, also known as hypothyroidism. Another endocrine problem is central adrenal insufficiency, which keeps the body from responding properly to stress or infections.

• #2 Prader-Willi Syndrome – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553161/

  Prader-Willi syndrome is a rare and complex genetic disorder that impacts the metabolic, endocrine, and neurologic systems. The syndrome manifests with severe hypotonia and feeding difficulties during the early years of life, leading to global developmental delays. […] Patients with Prader-Willi syndrome often exhibit behavioral and intellectual challenges. The syndrome is characterized by recognizable facial features, strabismus (crossed eyes), and musculoskeletal abnormalities. […] Patients display short stature and growth deceleration, failing to achieve the typical puberty growth spurt. […] The progression leading to the hallmark hyperphagia and obesity in Prader-Willi syndrome can be described in 4 phases. […] In Prader-Willi syndrome, central obesity is typical, leading to significant complications and increased morbidity and mortality.

• #2 Prader-Willi syndrome Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/diseases-conditions/prader-willi-syndrome

  Prader-Willi syndrome is a disease that is present from birth (congenital). It affects many parts of the body. People with this condition feel hungry all the time and become obese. They also have poor muscle tone, reduced mental ability, and underdeveloped sex organs. […] Signs of Prader-Willi syndrome may be seen at birth. […] Newborns are often small and floppy with reduced muscle tone. […] Male infants may have undescended testicles. […] Other symptoms may include: Trouble feeding as an infant, with poor weight gain, Almond-shaped eyes, Delayed muscle and motor function development, Narrowed head at the temples, Rapid weight gain, Short stature, Slow mental development, Very small hands and feet in comparison to the child’s body. […] Children have an intense craving for food. They will do almost anything to get food, including hoarding. This can result in rapid weight gain and morbid obesity. Morbid obesity may lead to: Type 2 diabetes, High blood pressure, Joint and lung problems.

• #2 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  Children and adults with Prader-Willi syndrome may have sleep conditions, including disruptions of the typical sleep cycle. They also may have sleep apnea, which is when breathing pauses during sleep. These conditions can make them very sleepy during the day and worsen behavior problems. […] These symptoms may include small hands and feet, and curvature of the spine, also known as scoliosis. They also may have hip problems, less saliva flow, dental problems, and nearsightedness and other vision problems. Other symptoms include a lack of pigment, also known as hypopigmentation, which causes hair, eyes and skin to be pale. They also may have problems controlling their body temperature. They may be able to handle more pain than the average person.

• #2 Prader-Willi syndrome: MedlinePlus GeneticsLock

  https://medlineplus.gov/genetics/condition/prader-willi-syndrome/

  Prader-Willi syndrome is a complex genetic condition that affects many parts of the body. In infancy, this condition is characterized by weak muscle tone (hypotonia), feeding difficulties, poor growth, and delayed development. Beginning in childhood, affected individuals develop an extreme hunger, which leads to chronic overeating (hyperphagia) and obesity. […] People with Prader-Willi syndrome typically have mild to moderate intellectual impairment and learning disabilities. Behavioral problems are common, including temper outbursts, stubbornness, and compulsive behavior such as picking at the skin. Sleep abnormalities can also occur. Additional features of this condition include distinctive facial features such as a narrow forehead, almond-shaped eyes, and a triangular mouth; short stature; and small hands and feet. Some people with Prader-Willi syndrome have unusually fair skin and light-colored hair. Both affected males and affected females have underdeveloped genitals. Puberty is delayed or incomplete, and most affected individuals are unable to have children (infertile).

• #2 Signs & Symptoms Of Prader-Willi Syndrome | Special Olympics Arizona

  https://specialolympicsarizona.org/prader-willi-syndrome-symptoms/

  Underdeveloped Sex Organs […] Individuals with Prader-Willi syndrome commonly deal with hypogonadism, which is a condition in which the sex organs produce little or no sex hormones. This results in underdeveloped sex organs, incomplete or very delayed puberty, and infertility. Many women with Prader-Willi syndrome do not start menstruating until they are nearly 30 or never begin menstruating, and many men may not develop facial hair or may not have a deepened voice. […] Physical Characteristics […] There are some recognizable physical characteristics of individuals with Prader-Willi, such as short adult height, low muscle mass, and high body fat caused by the underproduction of growth hormone. Children may also experience physical milestones, such as walking and sitting up, later than their peers.

• #2 What is Prader-Willi Syndrome

  https://www.fpwr.org/what-is-prader-willi-syndrome

  In addition to obesity, a variety of other symptoms can be associated with PWS. Individuals usually exhibit cognitive challenges, with measured IQs ranging from low normal to moderate intellectual disability. Those with normal IQs usually exhibit learning disabilities. Other issues may include growth hormone deficiency/short stature, small hands and feet, scoliosis, sleep disturbances with excessive daytime sleepiness, high pain threshold, speech apraxia/dyspraxia, and infertility. Behavioral difficulties may include obsessive-compulsive symptoms, skin picking, and difficulty controlling emotions. Adults with PWS are at increased risk for mental illness. However, PWS symptoms vary in severity and occurrence among individuals. […] The symptoms change over time in individuals with PWS.

• #2 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  A common feature of Prader-Willi syndrome is having mild to moderate problems thinking, reasoning and problem-solving. This is called cognitive impairment. Even children and adults without cognitive impairment may have learning disabilities. […] Toddlers with Prader-Willi syndrome often reach milestones in physical movement, such as sitting up or walking, later than other children. […] Speech often is delayed. Having a hard time choosing words and speaking clearly may continue as an adult. […] At times, children and adults may be very stubborn, angry, controlling or manipulative. They may throw temper tantrums, especially when denied food. They may not accept changes in routine. Also, they may start to show obsessive-compulsive or repetitive behaviors, or both. Other mental health conditions, such as anxiety and skin picking, may occur.

• #2 Prader-Willi Syndrome | Quirónsalud

  https://www.quironsalud.com/en/diseases-symptoms/prader-willi-syndrome

  Infancy and early childhood: Delayed growth and weight gain. Delayed psychomotor development and language acquisition. Low muscle mass and high body fat percentage. Hypopigmentation: light-colored hair, skin, and eyes. Hyperphagia: insatiable appetite and uncontrolled food intake, with a lack of satiety. This can lead to abnormal and obsessive behaviors related to food. […] School-age period: Obesity. Short stature. Small hands and feet. Strabismus, myopia, or other vision problems. Scoliosis: curvature of the spine. Sleep disorders: insomnia, frequent awakenings, apneas, and daytime hypersomnia. High pain tolerance, which can lead to self-injury. Compulsive skin picking. Altered temperature sensitivity. […] Adolescence and adulthood: Cognitive impairment: learning difficulties and speech articulation problems. Hypogonadism: little or no production of sex hormones, leading to delayed or incomplete puberty and, in most cases, infertility. Obsessive-compulsive traits. Stereotypies: repetitive behaviors. Behavioral problems: tantrums, stubbornness, manipulative behavior, intolerance to change. Difficulties in social relationships and emotional regulation. Mental health disorders: patients may develop symptoms of anxiety, depression, bipolar disorder, psychosis, or phobias.

• #2 What is PWS? – Prader-Willi California Foundation

  https://pwcf.org/what-is-prader-willi-syndrome/

  Clinical Symptoms in Infants: Reduced fetal movement. Other obstetric symptoms may include polyhydramnios, malpresentation, and/or growth restriction. Significant global hypotonia, poor suck reflex, weak cry. Failure to thrive: feeding difficulties that often require special feeding techniques. Characteristic facial features: almond shape eyes, long and narrow head shape, narrowing at the temples, small down turned mouth with thin upper lip (more likely in those with a deletion). Hypogonadism; small genitalia in males and females, male cryptorchidism. Hypopigmentation. Fair coloring compared to family members (more likely in those with a deletion). Excessive daytime sleepiness, narcolepsy, cataplexy. Eye abnormalities including strabismus (esotropia more common than exotropia). […] Clinical Symptoms in Children and Adults: Young Children: Global developmental delays. Cognitive impairment, learning disorders, impaired judgment. Eye abnormalities including myopia, amblyopia, strabismus. Weight gain without increase in calories (20–31 months). Hyperphagia: insatiable drive to eat or find food without normal satiety. Excessive weight gain and central obesity if diet and access to food are not strictly controlled (3+ years). High pain threshold. Hypothalamic hypogonadism. Scoliosis, kyphosis, kyphoscoliosis. Sleep disturbance and apneas, narcolepsy, cataplexy. Small hands and/or feet, narrow hands, straight ulnar borders. Speech and articulation problems. Temperature regulation irregularities. Temperament and behavioral issues. Thick viscous saliva with crusting at mouth corners.

• #2

  https://www.nhs.uk/conditions/prader-willi-syndrome/symptoms/

  Most people with Prader-Willi syndrome go through phases where their behaviour can be challenging. […] Many people with Prader-Willi syndrome persistently pick their skin, usually their face, hands or arms. […] Many people with Prader-Willi syndrome have problems sleeping. […] People with Prader-Willi syndrome have a high tolerance for pain, which can be potentially dangerous. […] Poor muscle tone means there’s an increased chance of developing a curvature of the spine (scoliosis). […] Children with Prader-Willi syndrome can develop: eye problems short or long-sightedness, or squint; poor muscle tone in the gut, which can cause constipation or a swollen tummy; tooth decay because they do not produce much saliva; weakening of the bones (osteoporosis) when they become adults because they do not have the sex hormones needed to keep bones healthy.

• #2 Prader-Willi Syndrome: Life Expectancy, Prevention, and More

  https://www.healthline.com/health/prader-willi-syndrome-life-expectancy

  Prader-Willi syndrome is a genetic disorder that affects growth, behavior, and learning. There is no cure for the syndrome, but continual monitoring and treatment may improve a persons quality of life. […] People with PWS may experience poor growth and low muscle tone in childhood, low muscle mass, and excessive eating as they age. […] While PWS on its own does not cause early death, complications from overeating and obesity may shorten an individuals lifespan. […] The median age of death for a person with PWS is ages 30 years. A 2022 review of studies on morbidity and mortality found that the average age of death may be closer to 21 years old. […] Overall, the life expectancy for people with PWS ranges between 1 month and 58 years. Some people with PWS may live into their late 60s.

• #2 Prader-Willi syndrome | Endocrine Conditions

  https://www.yourhormones.info/endocrine-conditions/prader-willi-syndrome/

  Childhood development of obesity because of excess fat and poor muscle development (usually starting between the ages of one and three years) […] A feeling of excess hunger and rarely feeling full developing in childhood, usually starting between the ages of three and five years. This can become progressive, leading (if not controlled) to worsening obesity (usually between the ages of 5 to 13 years). […] Complications from obesity may include high blood pressure, diabetes mellitus, heart failure, chest infections and breathing difficulties, even in childhood or early adulthood. If the obesity can be limited through vigorous control of the food environment and exercise, the life span may be normal. […] Deaths in adults with Prader-Willi syndrome are most often obesity-related due to heart and lung failure, skin infections and pneumonia, and are seen from the teenage years into the 20s, 30s and beyond.

• #2 Signs & Symptoms of Prader-Willi Syndrome | Trellis Recovery

  https://trellisrecoverycenters.com/signs-of-prader-willi-syndrome/

  The constant feeling of hunger and often being misunderstood because of it can cause discord with family members, friends, co-workers, and schoolmates. […] Commons signs from early childhood to adulthood include: Constant cravings to eat due to consistently feeling hungry, even after eating a full meal or overeating. Weight gain that can cause a person to become overweight or morbidly obese. Hoarding food. Eating frozen food, unappealing food, or garbage out of desperation to consume something. Poor physical development including short height and low muscle mass. […] Treatment approaches that begin in childhood can include: Nutritional supplements such as high-calorie formula. Weight management to help avoid massive weight gain while still getting a balanced nutritional intake. Treatment for various sleep disturbances. Human growth hormone treatment to help the child grow at a healthy rate and improve their muscle tone. Behavior management to help set schedules for when the child can eat. […] Some of these approaches can be continued into adulthood. Many people also benefit from attending support groups for those who have Prader-Willi syndrome.

• #2 Prader-Willi syndrome – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/diagnosis-treatment/drc-20356002

  Your endocrinologist may suggest that your child take hormone replacement therapy testosterone for males or estrogen and progesterone for females because of low levels of sex hormones. […] A dietitian can help you create a healthy, reduced-calorie diet to help manage your child’s weight while ensuring proper nutrition. […] Treating sleep apnea and other sleep problems can improve daytime sleepiness and behavioral issues. […] Your child likely will benefit from a range of therapies. These include physical therapy to make movement skills and strength better, speech therapy to make verbal skills better, and occupational therapy to learn everyday skills. […] You may need to create schedules for your child and set strict limits on access to food and how much food is eaten. […] A mental health professional, such as a psychologist or a psychiatrist, may help with mental health problems, such as obsessive-compulsive behaviors, skin picking, anxiety or a mood condition. […] Many adults with the condition live in residential care facilities that allow them to eat healthy diets, live safely, work and enjoy leisure activities. […] Managing hormone levels and weight can improve development and behavior and prevent complications.

• #2 Prader-Willi syndrome Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/diseases-conditions/prader-willi-syndrome

  As the child grows older, lab tests may show signs of morbid obesity, such as: Abnormal glucose tolerance, High insulin level in the blood, Low oxygen level in the blood. […] Children with this syndrome may not respond to luteinizing hormone-releasing factor. This is a sign that their sex organs are not producing hormones. There also may be signs of right-sided heart failure and knee and hip problems. […] The child will need the right education for their IQ level. The child will also need speech, physical, and occupational therapy as early as possible. Controlling weight will allow for a much more comfortable and healthy life. […] Complications of Prader-Willi can include: Type 2 diabetes, Right-sided heart failure, Bone (orthopedic) problems. […] Contact your health care provider if your child has symptoms of this condition. The disorder is frequently suspected at birth.

• #2 Prader-Willi Syndrome (PWS): Symptoms & Causes | NewYork-Presbyterian

  https://www.nyp.org/pediatrics/prader-willi-syndrome

  Prader-Willi syndrome is a rare genetic disorder that affects many body parts as children grow and develop, and symptoms include poor muscle tone and short stature. […] Children with Prader-Willi syndrome also develop insatiable hunger and cant feel full. Overeating due to this excessive appetite can lead to life-threatening obesity. […] Prader-Willi syndrome varies according to the timing and severity of symptoms. Some of the most troublesome symptoms of Prader-Willi syndrome have to do with eating, appetite and obesity. […] A constant feeling of hunger sets in. The inability to feel full leads to frequent eating, large portions, and rapid weight gain to the point of obesity if not managed. […] Prader-Willi syndrome is a lifelong condition with different symptoms and increased risk of complications over time. Symptoms and their severity vary from one person to another. […] Overwhelming hunger, and inability to feel full, that can lead to life-threatening obesity. […] The insatiable hunger felt by people with Prader-Willi syndrome leads to overeating and obesity, that is sometimes life-threatening.

• #3 Prader-Willi syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000311

  Prader-Willi syndrome (PWS; also known as Prader-Labhart-Willi syndrome) is a rare, complex, multisystem, neurologic disorder caused by loss of paternally expressed genes on chromosome 15q11-q13. […] Signs and symptoms may be extensive and wide-ranging; in general, however, consider genetic testing in an infant or young child with hypotonia, difficulty feeding, and/or hypogonadism. Depending on the age of the patient, other presenting features may include weight gain, hyperphagia, developmental delay, cognitive disability, sleep abnormalities, characteristic behaviors, and psychiatric disorders. […] PWS presents less commonly in adolescence or early adulthood, with features including new-onset type 2 diabetes, constant hunger and food-seeking behaviors, short stature, obesity, learning difficulties, speech articulation problems, and autistic spectrum behaviors.

• #3 What is Prader-Willi Syndrome? – Stanford Medicine Children’s Health

  https://www.stanfordchildrens.org/en/services/prader-willi-syndrome/about.html

  Prader-Willi syndrome (PWS) is a genetic disorder that can lead to a wide array of symptoms, including obesity and developmental delays. […] Babies born with PWS have poor muscle tone and a weak cry. They initially are slow feeders and appear undernourished. The feeding problems improve after infancy. Typically, between two and four years of age, the child becomes obsessed with food and has difficulty controlling his or her appetite. […] Symptoms of PWS include: In children under 3: Developmental delays, Feeding difficulties, Low muscle tone, Weak cry. In older children: Diabetes, Emotional difficulties, Hormone deficiencies, Hyperphagia, or excessive hunger, Intellectual disability, Obesity, Obsessive-compulsive behavior, Scoliosis, Short stature, Skin picking, Sleep issues, including sleep apnea, Speech disorders.

• #3 Prader-Willi syndrome: diagnosis & support | Raising Children Network

  https://raisingchildren.net.au/disability/guide-to-disabilities/assessment-diagnosis/prader-willi-syndrome

  Prader-Willi syndrome is a lifelong genetic condition that affects many parts of the body. […] The signs and symptoms of Prader-Willi syndrome vary. Newborns with Prader-Willi syndrome are typically floppy. They have feeding difficulties because their low muscle tone makes it hard for them to suck. Often these newborns need help from a feeding tube. Low muscle tone also means that it takes children with Prader-Willi syndrome longer to reach developmental milestones like sitting, crawling and walking. […] Other physical signs and symptoms can include: failure to thrive in infancy, short stature, small hands and feet, obesity from overeating, which can start at 2-4 years, undescended testicles and small genitalia in boys, irregular or no periods in girls, high tolerance of pain, problems regulating body temperature, which means children might not get fevers when they have infections, inability to vomit, lighter skin, eyes and hair compared with other family members, scoliosis, excessive sleepiness during the day, breathing issues while sleeping.

• #3 Prader-Willi Syndrome: Symptoms & Causes

  https://my.clevelandclinic.org/health/diseases/21016-prader-willi-syndrome

  Prader-Willi syndrome is a rare genetic condition that affects a childs metabolism and causes changes to their body and behavior. They have severe low muscle tone and poor feeding during early infancy, followed by a tremendous appetite that develops between 2 and 6 years of age. This can lead to severe obesity if excessive eating isnt managed. […] PWS typically also causes a delay in childhood milestones and puberty. Although rare, life-threatening complications can occur and include respiratory illnesses, obesity-related cardiovascular problems, sleep apnea and diabetes. […] Symptoms that affect your childs body may be present at birth but become more apparent as they grow. These may include: Almond-shaped eyes, A long, narrow head, A triangular mouth, Short height, Small hands and feet, Underdeveloped genitals.

• #3 What Is Prader-Willi Syndrome? Symptoms, Causes, Diagnosis, Treatment, and Prevention

  https://www.everydayhealth.com/prader-willi-syndrome/guide/

  They also can have behavioral problems such as temper tantrums, obsessive-compulsive issues, and skin picking. […] Most infants with Prader-Willi syndrome have reduced muscle tone, called hypotonia. This symptom can start before birth. The fetus may move less than usual in the womb or end up in a breech position, which may require the use of instruments in delivery. After birth, those weak muscles may make the baby feel „floppy,” similar to holding a rag doll. […] Infants with Prader-Willi syndrome are tired and sluggish, with a weak cry. They may not respond well to stimulation. Their weak muscles make it hard for them to suck firmly enough to breastfeed or bottle feed. This can lead to failure to thrive. Some babies will need to be tube fed. […] The hypotonia and feeding problems should improve as babies get older. Once they begin to eat better, they will start to grow.

• #3 Stages of PWS – Prader-Willi Syndrome Association NZ

  https://www.pws.org.nz/about-pws/stages-of-pws

  In the past, PWS was described as a 2 stage syndrome failure to thrive (poor feeding and slow growth) followed by hyperphagia (increased appetite). […] After observing that the changes in appetite and weight gain which occur in PWS are more gradual and complex than traditionally described, a research team investigated and presented an updated clinical description of the nutritional phases of PWS. […] 0 prenatal-birth Decreased fetal movements and lower birth weight than siblings […] 1a 0-9 months Hypotonia with difficulty feeding and decreased appetite […] 1b 9-25 months Improved feeding and appetite; growing appropriately […] 2a 2.1-4.5 years Weight increasing without appetite increase or excess calories […] 2b 4.5 8 years Increased appetite and interest in food, but can feel full

• #3 What is Prader-Willi Syndrome

  https://www.fpwr.org/what-is-prader-willi-syndrome

  Infants with PWS are hypotonic or floppy, with very low muscle tone. A weak cry and a poor suck reflex are typical. Babies with PWS usually are unable to breastfeed and frequently require tube feeding. These infants may suffer from failure to thrive if feeding difficulties are not carefully monitored and treated. As these babies grow older, strength and muscle tone generally improve. Motor milestones are achieved, but are usually delayed. Toddlers typically enter a period where they may begin to gain weight easily, prior to having a heightened interest in food. […] An unregulated appetite (hyperphagia) and easy weight gain characterize the later stages of PWS. These features most commonly begin between ages 3 and 8 years old, but are variable in onset and intensity. Individuals with PWS lack normal hunger and satiety cues. They usually are not able to control their food intake and will overeat if not closely monitored. Food seeking behaviors are very common. In addition, the metabolic rate of persons with PWS is lower than normal. Left untreated or in an unrestricted environment, this combination of problems often leads to morbid obesity and its many complications.

• #3

  https://www.nhs.uk/conditions/prader-willi-syndrome/

  Someone with the syndrome can eat much more than other people and still feel hungry. […] Limiting food intake can be very challenging. People with Prader-Willi syndrome may become frustrated when they want extra food, and their hunger can make them hide or steal food. […] Prader-Willi syndrome itself is not life-threatening. But compulsive eating and weight gain can cause young adults with the syndrome to develop serious obesity-related conditions such as: type 2 diabetes […] heart failure […] breathing difficulties. […] If their diet is well controlled and they do not become overweight, adults can have a good quality of life and probably a normal life expectancy.

• #3 Prader-Willi Syndrome (Causes, Symptoms and Treatment)

  https://patient.info/doctor/prader-willi-syndrome-pro

  Prader-Willi syndrome (PWS) is a neurodevelopmental genetic disorder. The main features include infantile hypotonia, a poor suck, failure to thrive and hypogonadism/hypogenitalism. Short stature and small hands/feet due to growth and other hormone deficiencies, hyperphagia and marked obesity occur in early childhood. Cognitive and behavioural problems (tantrums, compulsions, compulsive skin picking) are common. […] Clinical features change with age with hypotonia and a poor suck resulting in failure to thrive during infancy. As the child gets older, other features such as short stature, food seeking with excessive weight gain, developmental delay, cognitive disability and behavioural problems become evident. The phenotype is likely due to hypothalamic dysfunction, which is responsible for hyperphagia, temperature instability, high pain threshold, hypersomnia and multiple endocrine abnormalities including growth hormone and thyroid-stimulating hormone deficiencies, hypogonadism and central adrenal insufficiency. Obesity and its complications are the major causes of morbidity and mortality in PWS.

• #3

  https://111.wales.nhs.uk/encyclopaedia/p/article/praderwillisyndrome

  Most children with Prader-Willi syndrome have mild to moderate learning difficulties with a low IQ. […] Children with Prader-Willi syndrome are usually much shorter than other children of their own age. This is usually apparent by the time they’re 2 years old. […] Most people with Prader-Willi syndrome go through phases where their behaviour can be challenging. […] Many people with Prader-Willi syndrome have problems sleeping. […] People with Prader-Willi syndrome have a high tolerance for pain, which can be potentially dangerous. […] Poor muscle tone means there is an increased chance of developing a curvature of the spine (scoliosis). […] Children with Prader-Willi syndrome can develop eye problems, poor muscle tone in the gut, tooth decay, and weakening of the bones (osteoporosis) when they become adults because they do not have the sex hormones needed to keep bones healthy.

• #3 Prader-Willi Syndrome: Symptoms, Causes, and Treatments

  https://www.webmd.com/parenting/baby/prader-willi-syndrome

  Your child may also: Be short for their age, Have small hands or feet, Have extra body fat and not enough muscle mass, Have sex organs that may not develop, Have mild to moderate learning problems, Be slow to learn to talk, sit, stand, or walk, Have temper tantrums, Pick at their skin, Have sleep problems, Have mood and speech problems, Have scoliosis — a curved spine, Have too little thyroid or growth hormones. […] Because their sex organs don’t develop, women with PWS may never get a period. Or they may start their periods much later than others. Men who have PWS may not have facial hair. They may have small sex organs, and their voices may not change in puberty. People who have PWS usually aren’t able to have children.

• #3 Prader-Willi Syndrome | Cardinal Glennon

  https://www.ssmhealth.com/cardinal-glennon/services/pediatric-orthopedics/prader-willi-syndrome

  While there is no cure for Prader-Willi Syndrome, symptoms often can be managed with careful coordination of specialty care. […] Eating difficulties and digestive disorders are common in infants and children with PWS. The earliest symptom that can occur soon after birth is difficulty in suckling. […] By the time children are between 2 and 4 years of age, they can develop uncontrolled cravings for food. […] One of the more serious concerns is gastroparesis, a condition where the food does not move from the stomach into the small intestines properly. […] People with PWS have abnormal functioning of the hypothalamus and the pituitary gland, small but very important parts of the brain that control body temperature, blood pressure, heart rate, breathing ability, sleep, and hunger and thirst, among several other functions. The result of the abnormal function is reduced levels of growth hormone, which is important for proper metabolism.

• #3 Prader-Willi Syndrome | Cardinal Glennon

  https://www.ssmhealth.com/cardinal-glennon/services/pediatric-orthopedics/prader-willi-syndrome

  Prader-Willi syndrome (PWS) is a rare genetic disorder, affecting 1 in 10,000 to 1 in 30,000 babies born. It is, however, the most common genetic cause of severe obesity. […] Babies with PWS may kick less than normal while in the womb. They often are born past their due date and require a C-section delivery. Newborns typically show very low muscle tone and are often described as floppy. They might have difficulty breathing and may need extra oxygen or have difficulty eating and seem too weak to breastfeed or drink from a bottle. Such breathing and feeding issues usually delay a baby from going home from the hospital by weeks or even months. […] Later developmental milestones such as sitting, standing, and walking are significantly delayed. Children with PWS do not start walking, on average, until they are 27 to 29 months old. With the early use of growth hormone medication, though, children start to walk in about 18 months.

• #3 Signs & Symptoms Of Prader-Willi Syndrome | Special Olympics Arizona

  https://specialolympicsarizona.org/prader-willi-syndrome-symptoms/

  Individuals with Prader-Willi syndrome will often deal with some level of cognitive impairment, which causes mild to moderate intellectual disability. This intellectual disability can cause issues with thinking, reasoning, or problem solving. Most individuals with Prader-Willi will have learning difficulties and struggle to pay attention or engage with the material in a school setting. They may have delayed cognitive development and may speak, read, or understand things later than their peers. […] Increased Appetite […] One of the most well-known and common signs of Prader-Willi syndrome is an extreme hunger and craving for food, which generally begins in individuals with the syndrome around the time they reach age two. This constant hunger leads to overeating and consuming large portions of food frequently, which can result in rapid weight gain. Some individuals may deal with unusual food-seeking behaviors, such as hoarding food, eating frozen food, or even eating garbage in desperation. The increased appetite can make it difficult for parents of children with Prader-Willi to keep them at a healthy weight, and it can be hard to handle.

• #3 Prader-Willi Syndrome – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553161/

  The distinct presentation of Prader-Willi syndrome involves a gradual progression from hypotonia with poor feeding and slow weight gain to hyperphagia, followed by severe obesity, setting it apart from other diseases. […] The prognosis for patients with Prader-Willi syndrome varies, influenced by the timing of diagnosis and the extent of complications. Initiating treatment early and preventing severe obesity increases the likelihood of patients attaining an average lifespan. However, due to intellectual disabilities, most affected individuals require supportive services and are less likely to lead fully independent lives as adults.

• #3 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  A common feature of Prader-Willi syndrome is having mild to moderate problems thinking, reasoning and problem-solving. This is called cognitive impairment. Even children and adults without cognitive impairment may have learning disabilities. […] Toddlers with Prader-Willi syndrome often reach milestones in physical movement, such as sitting up or walking, later than other children. […] Speech often is delayed. Having a hard time choosing words and speaking clearly may continue as an adult. […] At times, children and adults may be very stubborn, angry, controlling or manipulative. They may throw temper tantrums, especially when denied food. They may not accept changes in routine. Also, they may start to show obsessive-compulsive or repetitive behaviors, or both. Other mental health conditions, such as anxiety and skin picking, may occur.

• #3 Prader-Willi Syndrome | Quirónsalud

  https://www.quironsalud.com/en/diseases-symptoms/prader-willi-syndrome

  Infancy and early childhood: Delayed growth and weight gain. Delayed psychomotor development and language acquisition. Low muscle mass and high body fat percentage. Hypopigmentation: light-colored hair, skin, and eyes. Hyperphagia: insatiable appetite and uncontrolled food intake, with a lack of satiety. This can lead to abnormal and obsessive behaviors related to food. […] School-age period: Obesity. Short stature. Small hands and feet. Strabismus, myopia, or other vision problems. Scoliosis: curvature of the spine. Sleep disorders: insomnia, frequent awakenings, apneas, and daytime hypersomnia. High pain tolerance, which can lead to self-injury. Compulsive skin picking. Altered temperature sensitivity. […] Adolescence and adulthood: Cognitive impairment: learning difficulties and speech articulation problems. Hypogonadism: little or no production of sex hormones, leading to delayed or incomplete puberty and, in most cases, infertility. Obsessive-compulsive traits. Stereotypies: repetitive behaviors. Behavioral problems: tantrums, stubbornness, manipulative behavior, intolerance to change. Difficulties in social relationships and emotional regulation. Mental health disorders: patients may develop symptoms of anxiety, depression, bipolar disorder, psychosis, or phobias.

• #3 Signs & Symptoms Of Prader-Willi Syndrome | Special Olympics Arizona

  https://specialolympicsarizona.org/prader-willi-syndrome-symptoms/

  Behavioral Issues […] Children and adults with Prader-Willi syndrome are commonly very stubborn and may be frequently angry, controlling, or manipulative. It is possible that they may throw frequent temper tantrums, especially in a situation where they are denied food. Individuals may have difficulty handling changes when it comes to their routine, and they may develop obsessive-compulsive behaviors or repetitive behaviors. Anxiety and skin picking may also be common behaviors among individuals with Prader-Willi syndrome. […] Sleep Disorders […] It is common for children and adults with Prader-Willi to have some sleep disorders, including disruptions of the normal sleep cycle. This can result in excessive daytime sleepiness and, in some cases, worsen behavioral problems. It is also common for individuals to have a condition where breathing pauses during sleep, known as sleep apnea, which could also make sleeping difficult for children or adults with the syndrome.

• #3 Prader-Willi Syndrome | Cardinal Glennon

  https://www.ssmhealth.com/cardinal-glennon/services/pediatric-orthopedics/prader-willi-syndrome

  Poor muscle tone, also called hypotonia, is usually detected at birth or in early infancy, but can also be suspected when there is little movement of the baby while in the womb. […] Common in children with PWS, flat feet are typically the result of overly flexible ligaments and poor muscle tone. […] Both children and adults with PWS may have decreased bone strength. This can lead to fractures or complicate healing after a bone surgery, such as a spinal fusion. […] Problems in the hip joint can occur when the hip socket develops abnormally and is not aligned or too shallow for the ball of the thigh bone to connect properly. […] Scoliosis is a side-to-side curve of the spine, which if severe, can cause major problems, including breathing difficulty and heart problems. An estimated 60-70% of PWS patients will develop a spine deformity.

• #3 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  Children and adults with Prader-Willi syndrome may have sleep conditions, including disruptions of the typical sleep cycle. They also may have sleep apnea, which is when breathing pauses during sleep. These conditions can make them very sleepy during the day and worsen behavior problems. […] These symptoms may include small hands and feet, and curvature of the spine, also known as scoliosis. They also may have hip problems, less saliva flow, dental problems, and nearsightedness and other vision problems. Other symptoms include a lack of pigment, also known as hypopigmentation, which causes hair, eyes and skin to be pale. They also may have problems controlling their body temperature. They may be able to handle more pain than the average person.

• #3 Prader-Willi Syndrome | AAFP

  https://www.aafp.org/pubs/afp/issues/2005/0901/p827.html

  Prader-Willi syndrome (PWS), a genetic disorder that usually involves chromosome 15, is the most common form of obesity caused by a genetic syndrome. Diagnosis often is delayed until early childhood because the clinical findings are relatively nonspecific, particularly in infancy, and the dysmorphism often is subtle. […] Typical findings on physical examination of persons with PWS are shown in Figures 1 and 2 and summarized in Table 1. Although PWS is associated with obesity, affected children classically present with difficulty feeding and subsequent failure to thrive in the first year of life. Newborns with PWS exhibit nonspecific findings including hypotonia, poor sucking reflex, diminished or absent cry, and somnolence. Early developmental milestones are delayed. After one year of age, there is a transition to hyperphagia. By school age, food-seeking behavior becomes increasingly difficult to control.

• #3 About the rare genetic condition called Prader-Willi Syndrome

  https://www.markvanderpump.co.uk/blog/posts/prader-willi-syndrome—symptoms-diagnosis-and-management

  At puberty it is common for secondary sexual characteristics like breast development, the onset of periods, facial hair growth or deeper voice pitch to be delayed or incomplete. […] Trouble remembering, concentrating, making decisions or learning new things is not unusual and about 5% of individuals have IQs in the low normal range. […] Obesity in PWS patients can lead to complications in adolescents and adults e.g. sleep apnoea and type 2 diabetes. […] Because of this it is recommended that children and adolescents with a BMI higher than the 95th percentile should be annually checked for type 2 diabetes. […] Obesity and its complications can lead to shortened life expectancy with these specific disorders being accountable: type 2 diabetes (25%), recurrent respiratory infections (50%), high rates of fractures (29%), leg ulceration (22% of adults), sleep disorders (20%).

• #3 Prader-Willi syndrome – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/diagnosis-treatment/drc-20356002

  Your endocrinologist may suggest that your child take hormone replacement therapy testosterone for males or estrogen and progesterone for females because of low levels of sex hormones. […] A dietitian can help you create a healthy, reduced-calorie diet to help manage your child’s weight while ensuring proper nutrition. […] Treating sleep apnea and other sleep problems can improve daytime sleepiness and behavioral issues. […] Your child likely will benefit from a range of therapies. These include physical therapy to make movement skills and strength better, speech therapy to make verbal skills better, and occupational therapy to learn everyday skills. […] You may need to create schedules for your child and set strict limits on access to food and how much food is eaten. […] A mental health professional, such as a psychologist or a psychiatrist, may help with mental health problems, such as obsessive-compulsive behaviors, skin picking, anxiety or a mood condition. […] Many adults with the condition live in residential care facilities that allow them to eat healthy diets, live safely, work and enjoy leisure activities. […] Managing hormone levels and weight can improve development and behavior and prevent complications.

• #3 What are the symptoms of Prader-Willi syndrome (PWS)? | NICHD – Eunice Kennedy Shriver National Institute of Child Health and Human Development

  http://www.nichd.nih.gov/health/topics/prader-willi/conditioninfo/symptoms

  Scientists think that the symptoms of PWS may be caused by a problem in a portion of the brain called the hypothalamus. Individuals with PWS may have mild to severe symptoms. An important early symptom of PWS is an infant’s inability to suck, which affects the ability to feed. Nearly all infants with PWS need help with feeding. Feeding and metabolic symptoms persist into adulthood. Because of their inability to stop eating, people with PWS are at increased risk for diabetes, trouble breathing during sleep, and other health risks. Many physical symptoms of PWS arise from poor regulation of various hormones, including growth hormone, thyroid hormone, and possibly adrenalin. Individuals with PWS grow slowly and experience delays in reaching physical activity milestones. Children with PWS tend to be substantially shorter than other children of similar age. Individuals with PWS have varying levels of intellectual disabilities. Learning disabilities are common, as are delays in starting to talk and in the development of language. Behavioral problems may include temper tantrums, extreme stubbornness, obsessive-compulsive symptoms, picking the skin, and general trouble in controlling emotions. The appearance of PWS symptoms occurs in two recognized stages: Stage 1 (Infancy to age 2 years) includes „Floppiness” and poor muscle tone, weak cries and a weak sucking reflex, inability to breastfeed, which may require feeding support, developmental delays, and small genital organs. Stage 2 (Ages 2 to 8) includes inability to feel satisfied with normal intake of food, inability to control eating, which can lead to overeating if not monitored, food-seeking behaviors, low metabolism, weight gain and obesity, daytime sleepiness and sleep problems, intellectual disabilities, small hands and feet, short stature, curvature of the spine (scoliosis), high pain threshold, behavioral problems, including the display of obsessive-compulsive symptoms, picking the skin, and difficulty controlling emotions, and small genitals, often resulting in infertility in later life.

• #4 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  Prader-Willi (PRAH-dur VIL-e) syndrome is a rare genetic condition that leads to physical, mental and behavioral problems. A key feature of Prader-Willi syndrome is a sense of being hungry all the time. […] People with Prader-Willi syndrome want to eat all the time because they never feel full. This is called hyperphagia. As a result, they usually find it hard to manage their weight. Many complications of Prader-Willi syndrome are due to obesity. […] Symptoms of Prader-Willi syndrome, which can vary, slowly change over time from childhood to adulthood. […] Symptoms that may be present from birth include: Poor muscle tone. A main sign during infancy is poor muscle tone, also known as hypotonia. Babies may rest with their elbows and knees loosely extended instead of fixed. They also may feel floppy or like rag dolls when they’re held.

• #4 What Is Prader-Willi Syndrome? Symptoms, Causes, Diagnosis, Treatment, and Prevention

  https://www.everydayhealth.com/prader-willi-syndrome/guide/

  They also can have behavioral problems such as temper tantrums, obsessive-compulsive issues, and skin picking. […] Most infants with Prader-Willi syndrome have reduced muscle tone, called hypotonia. This symptom can start before birth. The fetus may move less than usual in the womb or end up in a breech position, which may require the use of instruments in delivery. After birth, those weak muscles may make the baby feel „floppy,” similar to holding a rag doll. […] Infants with Prader-Willi syndrome are tired and sluggish, with a weak cry. They may not respond well to stimulation. Their weak muscles make it hard for them to suck firmly enough to breastfeed or bottle feed. This can lead to failure to thrive. Some babies will need to be tube fed. […] The hypotonia and feeding problems should improve as babies get older. Once they begin to eat better, they will start to grow.

• #4 Stages of PWS – Prader-Willi Syndrome Association NZ

  https://www.pws.org.nz/about-pws/stages-of-pws

  In the past, PWS was described as a 2 stage syndrome failure to thrive (poor feeding and slow growth) followed by hyperphagia (increased appetite). […] After observing that the changes in appetite and weight gain which occur in PWS are more gradual and complex than traditionally described, a research team investigated and presented an updated clinical description of the nutritional phases of PWS. […] 0 prenatal-birth Decreased fetal movements and lower birth weight than siblings […] 1a 0-9 months Hypotonia with difficulty feeding and decreased appetite […] 1b 9-25 months Improved feeding and appetite; growing appropriately […] 2a 2.1-4.5 years Weight increasing without appetite increase or excess calories […] 2b 4.5 8 years Increased appetite and interest in food, but can feel full

• #4 What Does a Child With Prader-Willi Syndrome Look Like?

  https://www.medicinenet.com/what_a_child_with_prader-willi_syndrome_looks_like/article.htm

  Children with Prader-Willi syndrome may have the following signs and symptoms: Almond-shaped eyes, Narrow forehead, Turned-down mouth, Thin upper lip, Underdeveloped genitalia, Poor muscle tone, which may cause a weak sucking reflex, Sleepiness and difficulty waking up, Poor response to stimulation and weak crying. […] As the child grows older, symptoms may include: Food cravings and weight gain, Short height stature and poor muscular mass, Undeveloped sex organs, Incomplete or delayed puberty, Mild to moderate cognitive impairment, Behavioral problems, Speech problems, Underactive thyroid (hypothyroidism), Adrenal insufficiency, High risk of osteoporosis. […] Researchers believe that PWS symptoms are caused by a malfunction in the hypothalamus, which is a part of the brain that regulates appetite, thirst, body temperature, pain, and waking and sleeping. Hypothalamic dysfunction can disrupt a range of physiological systems and pathways, resulting in various symptoms.

• #4 Signs & Symptoms of Prader-Willi Syndrome | Trellis Recovery

  https://trellisrecoverycenters.com/signs-of-prader-willi-syndrome/

  The constant feeling of hunger and often being misunderstood because of it can cause discord with family members, friends, co-workers, and schoolmates. […] Commons signs from early childhood to adulthood include: Constant cravings to eat due to consistently feeling hungry, even after eating a full meal or overeating. Weight gain that can cause a person to become overweight or morbidly obese. Hoarding food. Eating frozen food, unappealing food, or garbage out of desperation to consume something. Poor physical development including short height and low muscle mass. […] Treatment approaches that begin in childhood can include: Nutritional supplements such as high-calorie formula. Weight management to help avoid massive weight gain while still getting a balanced nutritional intake. Treatment for various sleep disturbances. Human growth hormone treatment to help the child grow at a healthy rate and improve their muscle tone. Behavior management to help set schedules for when the child can eat. […] Some of these approaches can be continued into adulthood. Many people also benefit from attending support groups for those who have Prader-Willi syndrome.

• #4 Prader-Willi Syndrome: Symptoms & Causes

  https://my.clevelandclinic.org/health/diseases/21016-prader-willi-syndrome

  Additional symptoms that affect your childs development and behavior include: Temper tantrums, emotional outbursts or stubbornness, Problems with cognitive development (intellectual disability), Obsessive or compulsive behaviors like skin picking, Sleep abnormalities, Eating challenges like not feeling satisfied after eating or eating an unusually large amount of food (hyperphagia). […] Hyperphagia may lead to class III obesity, which increases the likelihood of other complications, such as diabetes and heart disease. […] Many people with Prader-Willi syndrome develop obesity from overeating. Complications from obesity may include: Cardiac (heart) problems, Diabetes (Type 2), Hypertension (high blood pressure), Respiratory (lung) problems, Sleep apnea (interrupted breathing during sleep).

• #4 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  A classic sign of Prader-Willi syndrome is a craving for food all the time, starting in early childhood. Being hungry all the time leads to eating often and eating large portions. This leads to quick weight gain. Unusual food-seeking behaviors, such as hoarding food, or eating frozen food or garbage, may occur. […] A condition called hypogonadism occurs when sex organs testes in males and ovaries in females produce little or no sex hormones. This leads to sex organs that don’t develop fully and incomplete or delayed puberty. Nearly all people with Prader-Willi syndrome aren’t able to get pregnant. Without treatment, females may not start their menstrual period until their 30s, or they may never have a period. Males may not have much facial hair, and their voices may never fully deepen. […] Not making enough growth hormone can shorten adult height and lead to low muscle mass and high body fat. Other endocrine problems may include not making enough thyroid hormone, also known as hypothyroidism. Another endocrine problem is central adrenal insufficiency, which keeps the body from responding properly to stress or infections.

• #4 Prader-Willi Syndrome: Symptoms, Causes, and Treatments

  https://www.webmd.com/parenting/baby/prader-willi-syndrome

  Your child may also: Be short for their age, Have small hands or feet, Have extra body fat and not enough muscle mass, Have sex organs that may not develop, Have mild to moderate learning problems, Be slow to learn to talk, sit, stand, or walk, Have temper tantrums, Pick at their skin, Have sleep problems, Have mood and speech problems, Have scoliosis — a curved spine, Have too little thyroid or growth hormones. […] Because their sex organs don’t develop, women with PWS may never get a period. Or they may start their periods much later than others. Men who have PWS may not have facial hair. They may have small sex organs, and their voices may not change in puberty. People who have PWS usually aren’t able to have children.

• #4 Prader-Willi syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/3000311

  Patients with PWS have a shorter life expectancy than the general population, mainly due to complications of hyperphagia and obesity. However, with effective weight control management, patients with PWS may live into their seventh decade. […] Key diagnostic factors include central hypotonia, poor suck, weak cry, feeding difficulties, hypogonadism, weight gain and hyperphagia. […] Other diagnostic factors include developmental delay, cognitive disability, endocrine disorders, sleep abnormalities, behavioral abnormalities, psychiatric disorders, short stature, small hands and feet, hypopigmentation, ocular problems, spinal deformities, polyhydramnios, decreased fetal movements, developmental dysplasia of the hip, seizures, and premature adrenarche.

• #4 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  A common feature of Prader-Willi syndrome is having mild to moderate problems thinking, reasoning and problem-solving. This is called cognitive impairment. Even children and adults without cognitive impairment may have learning disabilities. […] Toddlers with Prader-Willi syndrome often reach milestones in physical movement, such as sitting up or walking, later than other children. […] Speech often is delayed. Having a hard time choosing words and speaking clearly may continue as an adult. […] At times, children and adults may be very stubborn, angry, controlling or manipulative. They may throw temper tantrums, especially when denied food. They may not accept changes in routine. Also, they may start to show obsessive-compulsive or repetitive behaviors, or both. Other mental health conditions, such as anxiety and skin picking, may occur.

• #4 What Is Prader-Willi Syndrome? Symptoms, Causes, Diagnosis, Treatment, and Prevention

  https://www.everydayhealth.com/prader-willi-syndrome/guide/

  With the right treatment, they can live as long as their peers. Yet they will need a lot of support from their families and a variety of professionals to remain independent and have a good quality of life. […] Although there are treatments to manage the symptoms of Prader-Willi syndrome, right now there is no cure. This is a lifelong condition.

• #4 Signs & Symptoms Of Prader-Willi Syndrome | Special Olympics Arizona

  https://specialolympicsarizona.org/prader-willi-syndrome-symptoms/

  Behavioral Issues […] Children and adults with Prader-Willi syndrome are commonly very stubborn and may be frequently angry, controlling, or manipulative. It is possible that they may throw frequent temper tantrums, especially in a situation where they are denied food. Individuals may have difficulty handling changes when it comes to their routine, and they may develop obsessive-compulsive behaviors or repetitive behaviors. Anxiety and skin picking may also be common behaviors among individuals with Prader-Willi syndrome. […] Sleep Disorders […] It is common for children and adults with Prader-Willi to have some sleep disorders, including disruptions of the normal sleep cycle. This can result in excessive daytime sleepiness and, in some cases, worsen behavioral problems. It is also common for individuals to have a condition where breathing pauses during sleep, known as sleep apnea, which could also make sleeping difficult for children or adults with the syndrome.

• #4 Prader-Willi Syndrome | Quirónsalud

  https://www.quironsalud.com/en/diseases-symptoms/prader-willi-syndrome

  Infancy and early childhood: Delayed growth and weight gain. Delayed psychomotor development and language acquisition. Low muscle mass and high body fat percentage. Hypopigmentation: light-colored hair, skin, and eyes. Hyperphagia: insatiable appetite and uncontrolled food intake, with a lack of satiety. This can lead to abnormal and obsessive behaviors related to food. […] School-age period: Obesity. Short stature. Small hands and feet. Strabismus, myopia, or other vision problems. Scoliosis: curvature of the spine. Sleep disorders: insomnia, frequent awakenings, apneas, and daytime hypersomnia. High pain tolerance, which can lead to self-injury. Compulsive skin picking. Altered temperature sensitivity. […] Adolescence and adulthood: Cognitive impairment: learning difficulties and speech articulation problems. Hypogonadism: little or no production of sex hormones, leading to delayed or incomplete puberty and, in most cases, infertility. Obsessive-compulsive traits. Stereotypies: repetitive behaviors. Behavioral problems: tantrums, stubbornness, manipulative behavior, intolerance to change. Difficulties in social relationships and emotional regulation. Mental health disorders: patients may develop symptoms of anxiety, depression, bipolar disorder, psychosis, or phobias.

• #4 What is PWS? – Prader-Willi California Foundation

  https://pwcf.org/what-is-prader-willi-syndrome/

  Clinical Symptoms in Infants: Reduced fetal movement. Other obstetric symptoms may include polyhydramnios, malpresentation, and/or growth restriction. Significant global hypotonia, poor suck reflex, weak cry. Failure to thrive: feeding difficulties that often require special feeding techniques. Characteristic facial features: almond shape eyes, long and narrow head shape, narrowing at the temples, small down turned mouth with thin upper lip (more likely in those with a deletion). Hypogonadism; small genitalia in males and females, male cryptorchidism. Hypopigmentation. Fair coloring compared to family members (more likely in those with a deletion). Excessive daytime sleepiness, narcolepsy, cataplexy. Eye abnormalities including strabismus (esotropia more common than exotropia). […] Clinical Symptoms in Children and Adults: Young Children: Global developmental delays. Cognitive impairment, learning disorders, impaired judgment. Eye abnormalities including myopia, amblyopia, strabismus. Weight gain without increase in calories (20–31 months). Hyperphagia: insatiable drive to eat or find food without normal satiety. Excessive weight gain and central obesity if diet and access to food are not strictly controlled (3+ years). High pain threshold. Hypothalamic hypogonadism. Scoliosis, kyphosis, kyphoscoliosis. Sleep disturbance and apneas, narcolepsy, cataplexy. Small hands and/or feet, narrow hands, straight ulnar borders. Speech and articulation problems. Temperature regulation irregularities. Temperament and behavioral issues. Thick viscous saliva with crusting at mouth corners.

• #4 Prader-Willi Syndrome | Cardinal Glennon

  https://www.ssmhealth.com/cardinal-glennon/services/pediatric-orthopedics/prader-willi-syndrome

  Poor muscle tone, also called hypotonia, is usually detected at birth or in early infancy, but can also be suspected when there is little movement of the baby while in the womb. […] Common in children with PWS, flat feet are typically the result of overly flexible ligaments and poor muscle tone. […] Both children and adults with PWS may have decreased bone strength. This can lead to fractures or complicate healing after a bone surgery, such as a spinal fusion. […] Problems in the hip joint can occur when the hip socket develops abnormally and is not aligned or too shallow for the ball of the thigh bone to connect properly. […] Scoliosis is a side-to-side curve of the spine, which if severe, can cause major problems, including breathing difficulty and heart problems. An estimated 60-70% of PWS patients will develop a spine deformity.

• #4 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  Children and adults with Prader-Willi syndrome may have sleep conditions, including disruptions of the typical sleep cycle. They also may have sleep apnea, which is when breathing pauses during sleep. These conditions can make them very sleepy during the day and worsen behavior problems. […] These symptoms may include small hands and feet, and curvature of the spine, also known as scoliosis. They also may have hip problems, less saliva flow, dental problems, and nearsightedness and other vision problems. Other symptoms include a lack of pigment, also known as hypopigmentation, which causes hair, eyes and skin to be pale. They also may have problems controlling their body temperature. They may be able to handle more pain than the average person.

• #4 About the rare genetic condition called Prader-Willi Syndrome

  https://www.markvanderpump.co.uk/blog/posts/prader-willi-syndrome—symptoms-diagnosis-and-management

  At puberty it is common for secondary sexual characteristics like breast development, the onset of periods, facial hair growth or deeper voice pitch to be delayed or incomplete. […] Trouble remembering, concentrating, making decisions or learning new things is not unusual and about 5% of individuals have IQs in the low normal range. […] Obesity in PWS patients can lead to complications in adolescents and adults e.g. sleep apnoea and type 2 diabetes. […] Because of this it is recommended that children and adolescents with a BMI higher than the 95th percentile should be annually checked for type 2 diabetes. […] Obesity and its complications can lead to shortened life expectancy with these specific disorders being accountable: type 2 diabetes (25%), recurrent respiratory infections (50%), high rates of fractures (29%), leg ulceration (22% of adults), sleep disorders (20%).

• #4 Prader-Willi Syndrome – Saniona

  https://saniona.com/patients/pws/

  Prader-Willi syndrome (PWS) is a rare genetic disorder characterized by insatiable appetite (hyperphagia), abnormal growth and body composition, low muscle tone (hypotonia), and social / emotional / cognitive deficits. […] Many of those affected with PWS become morbidly obese and suffer shortened life expectancy and significant mortality. Common causes of mortality in PWS include respiratory disease, cardiac disease, infection, choking, gastric rupture, and pulmonary embolism. […] If obesity is avoided and complications are well managed, life expectancy for individuals with PWS is normal or near normal, and most individuals can lead healthy lives.

• #4 Prader-Willi Syndrome – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553161/

  The distinct presentation of Prader-Willi syndrome involves a gradual progression from hypotonia with poor feeding and slow weight gain to hyperphagia, followed by severe obesity, setting it apart from other diseases. […] The prognosis for patients with Prader-Willi syndrome varies, influenced by the timing of diagnosis and the extent of complications. Initiating treatment early and preventing severe obesity increases the likelihood of patients attaining an average lifespan. However, due to intellectual disabilities, most affected individuals require supportive services and are less likely to lead fully independent lives as adults.

• #4 Prader-Willi syndrome | ABC Medical Center

  https://centromedicoabc.com/en/padecimientos/prader-willi-syndrome/

  Early diagnosis and treatment are essential for people with Prader-Willi syndrome to have a better quality of life. […] The main complications that this condition entails are related to hormonal dysfunctions and anxiety about food that cause accelerated weight gain and morbid obesity, which can trigger other types of diseases such as: Lung diseases. Apnea. Gallstones. High cholesterol. Diabetes. High blood pressure. Osteoporosis. Joint problems. Sterility. […] Prader-Willi syndrome is confirmed with a blood test and genetic testing. As the child grows, laboratory studies may reflect signs of morbid obesity, such as high insulin levels, low oxygenation, and glucose intolerance. […] There may also be signs of heart failure, knee, and hip problems, as well as hormonal dysfunction. […] The treatment to be followed is given based on the symptoms and includes a multidisciplinary team made up of endocrinologists, psychologists, nutritionists, occupational therapists, behavioral specialists, and physiotherapists.

• #4 Prader-Willi syndrome: MedlinePlus GeneticsLock

  https://medlineplus.gov/genetics/condition/prader-willi-syndrome/

  Prader-Willi syndrome is a complex genetic condition that affects many parts of the body. In infancy, this condition is characterized by weak muscle tone (hypotonia), feeding difficulties, poor growth, and delayed development. Beginning in childhood, affected individuals develop an extreme hunger, which leads to chronic overeating (hyperphagia) and obesity. […] People with Prader-Willi syndrome typically have mild to moderate intellectual impairment and learning disabilities. Behavioral problems are common, including temper outbursts, stubbornness, and compulsive behavior such as picking at the skin. Sleep abnormalities can also occur. Additional features of this condition include distinctive facial features such as a narrow forehead, almond-shaped eyes, and a triangular mouth; short stature; and small hands and feet. Some people with Prader-Willi syndrome have unusually fair skin and light-colored hair. Both affected males and affected females have underdeveloped genitals. Puberty is delayed or incomplete, and most affected individuals are unable to have children (infertile).

• #5 Signs & Symptoms Of Prader-Willi Syndrome | Special Olympics Arizona

  https://specialolympicsarizona.org/prader-willi-syndrome-symptoms/

  Underdeveloped Genitals […] Babies born with Prader-Willi may have underdeveloped genitals. Males may have a very small penis and scrotum, or testicles that are small or have not descended from the abdomen into the scrotum. In females, the clitoris or labia may be very small. […] Poor Responsiveness […] Infants with Prader-Willi syndrome will often have difficulty responding to stimuli and may seem unusually tired or have a hard time waking up. It is also common for babies to have a noticeably weak cry. […] Signs of Prader-Willi Syndrome in Children & Adults […] After infancy, around age 2, other symptoms begin to develop that will often require special attention and care for children and adults with Prader-Willi syndrome. These symptoms include: […] Learning Difficulties & Delayed Development

• #5 Stages of PWS – Prader-Willi Syndrome Association NZ

  https://www.pws.org.nz/about-pws/stages-of-pws

  In the past, PWS was described as a 2 stage syndrome failure to thrive (poor feeding and slow growth) followed by hyperphagia (increased appetite). […] After observing that the changes in appetite and weight gain which occur in PWS are more gradual and complex than traditionally described, a research team investigated and presented an updated clinical description of the nutritional phases of PWS. […] 0 prenatal-birth Decreased fetal movements and lower birth weight than siblings […] 1a 0-9 months Hypotonia with difficulty feeding and decreased appetite […] 1b 9-25 months Improved feeding and appetite; growing appropriately […] 2a 2.1-4.5 years Weight increasing without appetite increase or excess calories […] 2b 4.5 8 years Increased appetite and interest in food, but can feel full

• #5

  https://www.nhs.uk/conditions/prader-willi-syndrome/

  Someone with the syndrome can eat much more than other people and still feel hungry. […] Limiting food intake can be very challenging. People with Prader-Willi syndrome may become frustrated when they want extra food, and their hunger can make them hide or steal food. […] Prader-Willi syndrome itself is not life-threatening. But compulsive eating and weight gain can cause young adults with the syndrome to develop serious obesity-related conditions such as: type 2 diabetes […] heart failure […] breathing difficulties. […] If their diet is well controlled and they do not become overweight, adults can have a good quality of life and probably a normal life expectancy.

• #5 What Is Prader-Willi Syndrome? Symptoms, Causes, Diagnosis, Treatment, and Prevention

  https://www.everydayhealth.com/prader-willi-syndrome/guide/

  Within a few years, children’s feeding issues change completely. They develop an insatiable appetite. Because they don’t feel satisfied after eating, and they have weak muscles and a lower metabolism, these children gain an excessive amount of weight. To satisfy their food cravings, children may resort to hoarding or hiding food. […] Without food restriction by a parent or other caregiver, children can become morbidly obese, which can contribute to diabetes, heart problems, and other serious complications. […] Children with Prader-Willi syndrome often have developmental delays and intellectual disabilities that vary in severity. These children are typically slower than their peers to reach milestones like walking and crawling. They may be slow to speak, and struggle to speak clearly well into adulthood. And they may have difficulty thinking and reasoning.

• #5 Prader-Willi Syndrome | Cardinal Glennon

  https://www.ssmhealth.com/cardinal-glennon/services/pediatric-orthopedics/prader-willi-syndrome

  While there is no cure for Prader-Willi Syndrome, symptoms often can be managed with careful coordination of specialty care. […] Eating difficulties and digestive disorders are common in infants and children with PWS. The earliest symptom that can occur soon after birth is difficulty in suckling. […] By the time children are between 2 and 4 years of age, they can develop uncontrolled cravings for food. […] One of the more serious concerns is gastroparesis, a condition where the food does not move from the stomach into the small intestines properly. […] People with PWS have abnormal functioning of the hypothalamus and the pituitary gland, small but very important parts of the brain that control body temperature, blood pressure, heart rate, breathing ability, sleep, and hunger and thirst, among several other functions. The result of the abnormal function is reduced levels of growth hormone, which is important for proper metabolism.

• #5 Prader-Willi Syndrome – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553161/

  Prader-Willi syndrome is a rare and complex genetic disorder that impacts the metabolic, endocrine, and neurologic systems. The syndrome manifests with severe hypotonia and feeding difficulties during the early years of life, leading to global developmental delays. […] Patients with Prader-Willi syndrome often exhibit behavioral and intellectual challenges. The syndrome is characterized by recognizable facial features, strabismus (crossed eyes), and musculoskeletal abnormalities. […] Patients display short stature and growth deceleration, failing to achieve the typical puberty growth spurt. […] The progression leading to the hallmark hyperphagia and obesity in Prader-Willi syndrome can be described in 4 phases. […] In Prader-Willi syndrome, central obesity is typical, leading to significant complications and increased morbidity and mortality.

• #5 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  A classic sign of Prader-Willi syndrome is a craving for food all the time, starting in early childhood. Being hungry all the time leads to eating often and eating large portions. This leads to quick weight gain. Unusual food-seeking behaviors, such as hoarding food, or eating frozen food or garbage, may occur. […] A condition called hypogonadism occurs when sex organs testes in males and ovaries in females produce little or no sex hormones. This leads to sex organs that don’t develop fully and incomplete or delayed puberty. Nearly all people with Prader-Willi syndrome aren’t able to get pregnant. Without treatment, females may not start their menstrual period until their 30s, or they may never have a period. Males may not have much facial hair, and their voices may never fully deepen. […] Not making enough growth hormone can shorten adult height and lead to low muscle mass and high body fat. Other endocrine problems may include not making enough thyroid hormone, also known as hypothyroidism. Another endocrine problem is central adrenal insufficiency, which keeps the body from responding properly to stress or infections.

• #5 Prader-Willi syndrome | healthdirect

  https://www.healthdirect.gov.au/prader-willi-syndrome

  Prader-Willi syndrome (PWS) is a rare genetic condition. […] Although there is no cure for PWS, early treatment help with symptoms. […] In babies and young children, signs of PWS can include: a weak cry, difficulty sucking to feed, low muscle tone (floppiness), sleeping more than normal. […] Older children, teenagers and adults may have other symptoms and signs. […] Physical features of PWS can include: being short for your age, small hands and feet, small genitals, distinctive facial features (including a high and narrow forehead, a thin upper lip and downturned mouth, almond-shaped eyes, and eyes that look in different directions), lighter skin and hair than other people in the family, very flexible muscles, scoliosis (curved spine) or other spinal problems. […] Other features can include: an insatiable (limitless) appetite from about 2 years of age, food cravings and weight gain, developmental delays, including speech problems and delayed social and emotional skills, mild to moderate intellectual disability, behavioural problems, mental health problems.

• #5 Signs & Symptoms Of Prader-Willi Syndrome | Special Olympics Arizona

  https://specialolympicsarizona.org/prader-willi-syndrome-symptoms/

  Individuals with Prader-Willi syndrome will often deal with some level of cognitive impairment, which causes mild to moderate intellectual disability. This intellectual disability can cause issues with thinking, reasoning, or problem solving. Most individuals with Prader-Willi will have learning difficulties and struggle to pay attention or engage with the material in a school setting. They may have delayed cognitive development and may speak, read, or understand things later than their peers. […] Increased Appetite […] One of the most well-known and common signs of Prader-Willi syndrome is an extreme hunger and craving for food, which generally begins in individuals with the syndrome around the time they reach age two. This constant hunger leads to overeating and consuming large portions of food frequently, which can result in rapid weight gain. Some individuals may deal with unusual food-seeking behaviors, such as hoarding food, eating frozen food, or even eating garbage in desperation. The increased appetite can make it difficult for parents of children with Prader-Willi to keep them at a healthy weight, and it can be hard to handle.

• #5

  https://www.nhs.uk/conditions/prader-willi-syndrome/symptoms/

  Most people with Prader-Willi syndrome go through phases where their behaviour can be challenging. […] Many people with Prader-Willi syndrome persistently pick their skin, usually their face, hands or arms. […] Many people with Prader-Willi syndrome have problems sleeping. […] People with Prader-Willi syndrome have a high tolerance for pain, which can be potentially dangerous. […] Poor muscle tone means there’s an increased chance of developing a curvature of the spine (scoliosis). […] Children with Prader-Willi syndrome can develop: eye problems short or long-sightedness, or squint; poor muscle tone in the gut, which can cause constipation or a swollen tummy; tooth decay because they do not produce much saliva; weakening of the bones (osteoporosis) when they become adults because they do not have the sex hormones needed to keep bones healthy.

• #5 Prader-Willi Syndrome | Quirónsalud

  https://www.quironsalud.com/en/diseases-symptoms/prader-willi-syndrome

  Infancy and early childhood: Delayed growth and weight gain. Delayed psychomotor development and language acquisition. Low muscle mass and high body fat percentage. Hypopigmentation: light-colored hair, skin, and eyes. Hyperphagia: insatiable appetite and uncontrolled food intake, with a lack of satiety. This can lead to abnormal and obsessive behaviors related to food. […] School-age period: Obesity. Short stature. Small hands and feet. Strabismus, myopia, or other vision problems. Scoliosis: curvature of the spine. Sleep disorders: insomnia, frequent awakenings, apneas, and daytime hypersomnia. High pain tolerance, which can lead to self-injury. Compulsive skin picking. Altered temperature sensitivity. […] Adolescence and adulthood: Cognitive impairment: learning difficulties and speech articulation problems. Hypogonadism: little or no production of sex hormones, leading to delayed or incomplete puberty and, in most cases, infertility. Obsessive-compulsive traits. Stereotypies: repetitive behaviors. Behavioral problems: tantrums, stubbornness, manipulative behavior, intolerance to change. Difficulties in social relationships and emotional regulation. Mental health disorders: patients may develop symptoms of anxiety, depression, bipolar disorder, psychosis, or phobias.

• #5 Prader-Willi Syndrome | Cardinal Glennon

  https://www.ssmhealth.com/cardinal-glennon/services/pediatric-orthopedics/prader-willi-syndrome

  Poor muscle tone, also called hypotonia, is usually detected at birth or in early infancy, but can also be suspected when there is little movement of the baby while in the womb. […] Common in children with PWS, flat feet are typically the result of overly flexible ligaments and poor muscle tone. […] Both children and adults with PWS may have decreased bone strength. This can lead to fractures or complicate healing after a bone surgery, such as a spinal fusion. […] Problems in the hip joint can occur when the hip socket develops abnormally and is not aligned or too shallow for the ball of the thigh bone to connect properly. […] Scoliosis is a side-to-side curve of the spine, which if severe, can cause major problems, including breathing difficulty and heart problems. An estimated 60-70% of PWS patients will develop a spine deformity.

• #5 Prader-Willi syndrome Care of adults in general practice

  https://www.racgp.org.au/afp/2013/january-february/prader-willi-syndrome

  Complications of obesity are a major cause of morbidity and early death in adults with PWS. […] A diagnosis of PWS in adults is often missed. In addition, diagnosis of PWS on only clinical characteristics is uncertain. […] Each year new diagnoses of PWS are made in patients aged in their 20s and 30s. […] The GP or allied health professional can play a major role in identifying adults with PWS by re-assessment of an existing clinical diagnosis. […] Patients with PWS visit their GP frequently due to the numerous chronic and sometimes acute problems related to obesity, respiratory function, sleep and behaviour. […] A high pain threshold, absence of fever or vomiting, adverse reactions to medication or anaesthesia are specific concerns in patients with confirmed PWS, therefore genetic diagnosis is important.

• #5 Prader-Willi syndrome – Symptoms, diagnosis and treatment | BMJ Best Practice

  https://bestpractice.bmj.com/topics/en-gb/3000311

  Patients with PWS have a shorter life expectancy than the general population, mainly due to complications of hyperphagia and obesity. However, with effective weight control management, patients with PWS may live into their seventh decade. […] Key diagnostic factors include central hypotonia, poor suck, weak cry, feeding difficulties, hypogonadism, weight gain and hyperphagia. […] Other diagnostic factors include developmental delay, cognitive disability, endocrine disorders, sleep abnormalities, behavioural abnormalities, psychiatric disorders, short stature, small hands and feet, hypopigmentation, ocular problems, spinal deformities, polyhydramnios, decreased fetal movements, developmental dysplasia of the hip, seizures, and premature adrenarche.

• #5 Signs & Symptoms of Prader-Willi Syndrome | Trellis Recovery

  https://trellisrecoverycenters.com/signs-of-prader-willi-syndrome/

  The constant feeling of hunger and often being misunderstood because of it can cause discord with family members, friends, co-workers, and schoolmates. […] Commons signs from early childhood to adulthood include: Constant cravings to eat due to consistently feeling hungry, even after eating a full meal or overeating. Weight gain that can cause a person to become overweight or morbidly obese. Hoarding food. Eating frozen food, unappealing food, or garbage out of desperation to consume something. Poor physical development including short height and low muscle mass. […] Treatment approaches that begin in childhood can include: Nutritional supplements such as high-calorie formula. Weight management to help avoid massive weight gain while still getting a balanced nutritional intake. Treatment for various sleep disturbances. Human growth hormone treatment to help the child grow at a healthy rate and improve their muscle tone. Behavior management to help set schedules for when the child can eat. […] Some of these approaches can be continued into adulthood. Many people also benefit from attending support groups for those who have Prader-Willi syndrome.

• #5 Prader-Willi syndrome | Livi

  https://www.livi.co.uk/medical-advice/general-health/prader-willi-syndrome/

  Adults with Prader-Willi syndrome can live independent lives. While most people will still need the right support and care, they can still work and have active social lives. […] Sadly, people with Prader-Willi syndrome have a reduced life expectancy. The average life expectancy is 30 years, but people have been known to live into their 60s.

• #5 Prader-Willi syndrome – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/diagnosis-treatment/drc-20356002

  Typically, healthcare professionals suspect Prader-Willi syndrome based on symptoms. A diagnosis can be made through genetic testing nearly all the time. This blood test can find problems in your child’s chromosomes that suggest Prader-Willi syndrome. […] Early diagnosis and treatment can make quality of life better for people with Prader-Willi syndrome. […] Although specific treatments vary depending on symptoms, most children with Prader-Willi syndrome will need: Good nutrition. Many infants with Prader-Willi syndrome have a hard time feeding because they have less muscle tone. Your child’s healthcare professional may recommend a high-calorie formula or special feeding methods to help your baby gain weight. They will monitor your child’s growth. […] Human growth hormone (HGH) treatment helps infants and children with Prader-Willi syndrome grow. It also makes muscle tone better and lowers body fat.

• #6

  https://www.nhs.uk/conditions/prader-willi-syndrome/symptoms/

  Most people with Prader-Willi syndrome go through phases where their behaviour can be challenging. […] Many people with Prader-Willi syndrome persistently pick their skin, usually their face, hands or arms. […] Many people with Prader-Willi syndrome have problems sleeping. […] People with Prader-Willi syndrome have a high tolerance for pain, which can be potentially dangerous. […] Poor muscle tone means there’s an increased chance of developing a curvature of the spine (scoliosis). […] Children with Prader-Willi syndrome can develop: eye problems short or long-sightedness, or squint; poor muscle tone in the gut, which can cause constipation or a swollen tummy; tooth decay because they do not produce much saliva; weakening of the bones (osteoporosis) when they become adults because they do not have the sex hormones needed to keep bones healthy.

• #6 Stages of PWS – Prader-Willi Syndrome Association NZ

  https://www.pws.org.nz/about-pws/stages-of-pws

  In the past, PWS was described as a 2 stage syndrome failure to thrive (poor feeding and slow growth) followed by hyperphagia (increased appetite). […] After observing that the changes in appetite and weight gain which occur in PWS are more gradual and complex than traditionally described, a research team investigated and presented an updated clinical description of the nutritional phases of PWS. […] 0 prenatal-birth Decreased fetal movements and lower birth weight than siblings […] 1a 0-9 months Hypotonia with difficulty feeding and decreased appetite […] 1b 9-25 months Improved feeding and appetite; growing appropriately […] 2a 2.1-4.5 years Weight increasing without appetite increase or excess calories […] 2b 4.5 8 years Increased appetite and interest in food, but can feel full

• #6 Prader-Willi Syndrome – Brain Foundation

  https://brainfoundation.org.au/disorders/prader-willi-syndrome/

  People with PWS, from the onset of insatiable appetite, will never have control over their craving. It is not a matter of self control; their brain just doesnt register that they have had enough to eat. They require considerably fewer calories 30 to 50% less than the average person so they should never be put in a situation where they are left alone with food. […] Rigid behaviour and tantrums are part of the syndrome.

• #6 What Is Prader-Willi Syndrome?

  https://withinhealth.com/learn/articles/prader-willi-syndrome

  The short-term effects of Prader-Willi syndrome are primarily related to overeating on a regular basis, they include: food poisoning, stomach pain, fatigue, constipation, swollen stomach, choking, open sores and infection from skin picking. […] While Prader-Willi syndrome can affect a persons daily life, its not usually life-threatening. […] Individuals with Prader-Willi syndrome can tolerate far larger amounts of food than those without the condition before their body automatically induces vomiting. Because they are not sensitive to pain, they are at a higher risk of a stomach rupture, which can result in a life-threatening infection. […] Other long-term effects associated with Prader-Willi syndrome include: difficulty with short-term memory, developmental delays, tooth decay from a lack of saliva, delayed periods, increased risk of liver disease and gallbladder stones, inability to have children, respiratory problems.

• #6 Prader-Willi Syndrome | Quirónsalud

  https://www.quironsalud.com/en/diseases-symptoms/prader-willi-syndrome

  Infancy and early childhood: Delayed growth and weight gain. Delayed psychomotor development and language acquisition. Low muscle mass and high body fat percentage. Hypopigmentation: light-colored hair, skin, and eyes. Hyperphagia: insatiable appetite and uncontrolled food intake, with a lack of satiety. This can lead to abnormal and obsessive behaviors related to food. […] School-age period: Obesity. Short stature. Small hands and feet. Strabismus, myopia, or other vision problems. Scoliosis: curvature of the spine. Sleep disorders: insomnia, frequent awakenings, apneas, and daytime hypersomnia. High pain tolerance, which can lead to self-injury. Compulsive skin picking. Altered temperature sensitivity. […] Adolescence and adulthood: Cognitive impairment: learning difficulties and speech articulation problems. Hypogonadism: little or no production of sex hormones, leading to delayed or incomplete puberty and, in most cases, infertility. Obsessive-compulsive traits. Stereotypies: repetitive behaviors. Behavioral problems: tantrums, stubbornness, manipulative behavior, intolerance to change. Difficulties in social relationships and emotional regulation. Mental health disorders: patients may develop symptoms of anxiety, depression, bipolar disorder, psychosis, or phobias.

• #6 What is Prader-Willi Syndrome

  https://www.fpwr.org/what-is-prader-willi-syndrome

  In addition to obesity, a variety of other symptoms can be associated with PWS. Individuals usually exhibit cognitive challenges, with measured IQs ranging from low normal to moderate intellectual disability. Those with normal IQs usually exhibit learning disabilities. Other issues may include growth hormone deficiency/short stature, small hands and feet, scoliosis, sleep disturbances with excessive daytime sleepiness, high pain threshold, speech apraxia/dyspraxia, and infertility. Behavioral difficulties may include obsessive-compulsive symptoms, skin picking, and difficulty controlling emotions. Adults with PWS are at increased risk for mental illness. However, PWS symptoms vary in severity and occurrence among individuals. […] The symptoms change over time in individuals with PWS.

• #6 Prader-Willi syndrome – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/prader-willi-syndrome/symptoms-causes/syc-20355997

  Children and adults with Prader-Willi syndrome may have sleep conditions, including disruptions of the typical sleep cycle. They also may have sleep apnea, which is when breathing pauses during sleep. These conditions can make them very sleepy during the day and worsen behavior problems. […] These symptoms may include small hands and feet, and curvature of the spine, also known as scoliosis. They also may have hip problems, less saliva flow, dental problems, and nearsightedness and other vision problems. Other symptoms include a lack of pigment, also known as hypopigmentation, which causes hair, eyes and skin to be pale. They also may have problems controlling their body temperature. They may be able to handle more pain than the average person.

• #6 Prader-Willi syndrome | Endocrine Conditions

  https://www.yourhormones.info/endocrine-conditions/prader-willi-syndrome/

  Childhood development of obesity because of excess fat and poor muscle development (usually starting between the ages of one and three years) […] A feeling of excess hunger and rarely feeling full developing in childhood, usually starting between the ages of three and five years. This can become progressive, leading (if not controlled) to worsening obesity (usually between the ages of 5 to 13 years). […] Complications from obesity may include high blood pressure, diabetes mellitus, heart failure, chest infections and breathing difficulties, even in childhood or early adulthood. If the obesity can be limited through vigorous control of the food environment and exercise, the life span may be normal. […] Deaths in adults with Prader-Willi syndrome are most often obesity-related due to heart and lung failure, skin infections and pneumonia, and are seen from the teenage years into the 20s, 30s and beyond.

• #6 Prader-Willi Syndrome: Life Expectancy, Prevention, and More

  https://www.healthline.com/health/prader-willi-syndrome-life-expectancy

  Respiratory failure is the most common cause of death, responsible for up to half of the deaths of both children and adults with PWS. […] According to the National Health Service (NHS) in the United Kingdom, the risk of early death may increase If a person eats excessively (hyperphagia), gains weight, and develops health conditions related to obesity. […] One of the biggest risk factors for early death is obesity. […] More specifically, compulsive eating is a significant predictor of early death. Treatment that reduces the drive to eat may help with this symptom and prevent occurrences such as choking and obesity that lead to accidents and health complications. […] There is no cure for PWS. However, with advances in treatment and management, the death rate has been decreasing by around 1.25% per year. […] PWS itself does not shorten a persons life expectancy. Early diagnosis and appropriate treatment may prevent associated complications from becoming life threatening.

• #7 Stages of PWS – Prader-Willi Syndrome Association NZ

  https://www.pws.org.nz/about-pws/stages-of-pws

  3 8 years adulthood Hyperphagic; rarely feels full […] 4 adulthood Appetite is no longer insatiable (only very few adults and usually 30 years). […] The neurological and endocrine mechanisms underlying the progression of these phases remains unclear, but awareness of the various phases can aid both parents and researchers. Parents will know what to expect as their child grows which can help prevent early-onset obesity and researchers are able to study the biological mechanisms of each phase, providing a basis for developing new treatments.

• #7 Signs & Symptoms Of Prader-Willi Syndrome | Special Olympics Arizona

  https://specialolympicsarizona.org/prader-willi-syndrome-symptoms/

  Behavioral Issues […] Children and adults with Prader-Willi syndrome are commonly very stubborn and may be frequently angry, controlling, or manipulative. It is possible that they may throw frequent temper tantrums, especially in a situation where they are denied food. Individuals may have difficulty handling changes when it comes to their routine, and they may develop obsessive-compulsive behaviors or repetitive behaviors. Anxiety and skin picking may also be common behaviors among individuals with Prader-Willi syndrome. […] Sleep Disorders […] It is common for children and adults with Prader-Willi to have some sleep disorders, including disruptions of the normal sleep cycle. This can result in excessive daytime sleepiness and, in some cases, worsen behavioral problems. It is also common for individuals to have a condition where breathing pauses during sleep, known as sleep apnea, which could also make sleeping difficult for children or adults with the syndrome.

• #7 Prader-Willi Syndrome | Cardinal Glennon

  https://www.ssmhealth.com/cardinal-glennon/services/pediatric-orthopedics/prader-willi-syndrome

  While there is no cure for Prader-Willi Syndrome, symptoms often can be managed with careful coordination of specialty care. […] Eating difficulties and digestive disorders are common in infants and children with PWS. The earliest symptom that can occur soon after birth is difficulty in suckling. […] By the time children are between 2 and 4 years of age, they can develop uncontrolled cravings for food. […] One of the more serious concerns is gastroparesis, a condition where the food does not move from the stomach into the small intestines properly. […] People with PWS have abnormal functioning of the hypothalamus and the pituitary gland, small but very important parts of the brain that control body temperature, blood pressure, heart rate, breathing ability, sleep, and hunger and thirst, among several other functions. The result of the abnormal function is reduced levels of growth hormone, which is important for proper metabolism.

• #7 Prader-Willi Syndrome: Life Expectancy, Prevention, and More

  https://www.healthline.com/health/prader-willi-syndrome-life-expectancy

  Respiratory failure is the most common cause of death, responsible for up to half of the deaths of both children and adults with PWS. […] According to the National Health Service (NHS) in the United Kingdom, the risk of early death may increase If a person eats excessively (hyperphagia), gains weight, and develops health conditions related to obesity. […] One of the biggest risk factors for early death is obesity. […] More specifically, compulsive eating is a significant predictor of early death. Treatment that reduces the drive to eat may help with this symptom and prevent occurrences such as choking and obesity that lead to accidents and health complications. […] There is no cure for PWS. However, with advances in treatment and management, the death rate has been decreasing by around 1.25% per year. […] PWS itself does not shorten a persons life expectancy. Early diagnosis and appropriate treatment may prevent associated complications from becoming life threatening.

• #8 Stages of PWS – Prader-Willi Syndrome Association NZ

  https://www.pws.org.nz/about-pws/stages-of-pws

  3 8 years adulthood Hyperphagic; rarely feels full […] 4 adulthood Appetite is no longer insatiable (only very few adults and usually 30 years). […] The neurological and endocrine mechanisms underlying the progression of these phases remains unclear, but awareness of the various phases can aid both parents and researchers. Parents will know what to expect as their child grows which can help prevent early-onset obesity and researchers are able to study the biological mechanisms of each phase, providing a basis for developing new treatments.

• #8 Prader-Willi syndrome: diagnosis & support | Raising Children Network

  https://raisingchildren.net.au/disability/guide-to-disabilities/assessment-diagnosis/prader-willi-syndrome

  Most children and teenagers with Prader-Willi syndrome have mild to moderate intellectual disability. […] One of the key characteristics of Prader-Willi syndrome is excessive appetite. This can lead to overeating and obesity. […] Children with Prader-Willi syndrome can have medical concerns like: rupture of the stomach from overeating, constipation, bowel obstruction, sleep apnoea and other sleep disorders, type-2 diabetes, undetected infections or injuries because of their high pain tolerance, a higher risk of choking because of their inability to vomit, growth hormone deficiency, osteoporosis.

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