Materiały źródłowe

• #1 Giardiasis: What It Is, Symptoms, Treatments & Medications

  https://my.clevelandclinic.org/health/diseases/15238-giardiasis

  Giardiasis is an intestinal infection caused by a microscopic parasite called Giardia. This parasite lives all over the world, especially in bodies of water. If you accidentally swallow it, it takes up residence in your small intestine and multiplies, feeding off the nutrients there. This can cause a variety of intestinal symptoms, including foul-smelling diarrhea, bloating and gas, stomach cramps, nausea and fatigue. […] Giardiasis symptoms can be mild to severe, and some people never have symptoms. The infection typically clears by itself after a few weeks, but people with weaker immune systems may have a harder time clearing it. A healthcare provider can prescribe antiparasitic medications for giardiasis if you need them. Sometimes, people continue to have symptoms for weeks to months after the infection has gone.

• #1 Giardiasis: What It Is, Symptoms, Treatments & Medications

  https://my.clevelandclinic.org/health/diseases/15238-giardiasis

  About half of people never develop symptoms of giardiasis. Among those who do, common symptoms include watery diarrhea, fatty or greasy poop that floats, stomach pain and cramping, intestinal gas and bloating, nausea and loss of appetite, and increasing fatigue. […] Most people have short-term symptoms during their infection, but occasionally, some people have longer-lasting or recurring symptoms. They might develop dehydration and weight loss from the chronic diarrhea and nausea. Sometimes, they develop lasting digestive difficulties, like lactose intolerance. […] Symptoms typically last between two and six weeks, but in some people, they can last longer. […] Giardia infection doesn’t always cause noticeable symptoms, but it can. Some symptoms are due to the parasite itself, and others are due to your body activating to remove the parasite. For example, the parasite feeding off your nutrients might sap your energy, making you feel increasingly tired. Diarrhea, swelling and skin reactions are symptoms of inflammation, part of your immune system’s response.

• #1 Symptoms of Giardia Infection | Giardia | CDC

  https://www.cdc.gov/giardia/signs-symptoms/index.html

  Diarrhea is the most common symptom of Giardia infection. […] Giardia can cause short-term symptoms, long-term symptoms, or no symptoms at all. […] Symptoms often begin by having diarrhea 2 to 5 times per day and feeling more and more tired. However, Giardia infections do not always cause symptoms. […] Symptoms usually start 1 to 2 weeks after swallowing Giardia germs. They typically last for 2 to 6 weeks. Symptoms may last longer than 6 weeks, especially if you have a weakened immune system (for example, due to an illness such as HIV). […] Occasionally, Giardia infection causes long-term symptoms that can last for years. […] Complications and long-term symptoms can include: Reactive arthritis (joint pain), Irritable bowel syndrome, which causes stomach pain and other symptoms, Recurring diarrhea, Weight loss, Other symptoms caused by not being able to absorb nutrients, such as fat or vitamin B12. […] For children, a serious Giardia infection may: Delay physical and mental growth, Slow development, Prevent them from absorbing nutrients from their food (malnutrition).

• #1 Giardiasis Clinical Presentation: History, Physical Examination

  https://emedicine.medscape.com/article/176718-clinical

  A small number of persons develop abrupt onset of explosive, watery diarrhea; abdominal cramps; foul-smelling flatus; vomiting; fever; and malaise. These symptoms may last 3-4 days before transitioning into the more common subacute syndrome. Most patients experience a more insidious onset of symptoms, which may be recurrent or resistant. […] Stools often become malodorous, soft, and greasy. Watery diarrhea may alternate with soft stools or even constipation. Upper gastrointestinal symptoms, often exacerbated by eating, accompany stool changes or may be present in the absence of soft stools. These include upper and midabdominal cramping, nausea, early satiety, bloating, substernal burning, and acid indigestion. […] Anorexia, fatigue, malaise, and weight loss are common. Chronic illness may occur. Adults may present with a long-standing malabsorption syndrome, and children with failure to thrive.

• #1 Giardiasis Clinical Presentation: History, Physical Examination

  https://emedicine.medscape.com/article/176718-clinical

  Clinical signs and symptoms of giardiasis include the following: Diarrhea, malaise, weakness, abdominal distention, flatulence, abdominal cramps, nausea, malodorous, greasy stools, anorexia, weight loss, vomiting, low-grade fever (infrequent), and various neurologic symptoms (eg, irritability, sleep disorder, mental depression, neurasthenia) […] Diarrhea is the most common symptom of acute Giardia infection, occurring in 90% of symptomatic subjects. Abdominal cramping, bloating, and flatulence occur in 70-75% of symptomatic patients. […] Symptoms of chronic infection include chronic diarrhea, malaise, nausea, and anorexia. Weight loss, as much as 10-15 pounds in adults, occurs in approximately 66% of symptomatic patients. Chronic sporadic diarrhea may continue for months. Postinfection lactase deficiency also is a common finding, occurring in up to 40% of cases.

• #1 Giardiasis – Wikipedia

  https://en.wikipedia.org/wiki/Giardiasis

  Infected individuals who experience symptoms (about 10% have no symptoms) may have diarrhea, abdominal pain, and weight loss. […] Less common symptoms include vomiting and blood in the stool. […] Symptoms usually begin one to three weeks after exposure and, without treatment, may last two to six weeks or longer. […] Symptoms typically develop 915 days after exposure, but may occur as early as one day. […] The most common and prominent symptom is chronic diarrhoea, which can occur for weeks or months if untreated. […] Diarrhoea is often greasy and foul-smelling, with a tendency to float. […] This characteristic diarrhoea is often accompanied by several other symptoms, including gas, abdominal cramps, and nausea or vomiting. […] Prolonged disease is often characterised by diarrhoea and malabsorption of nutrients in the intestine.

• #1 Giardiasis

  https://www.nhs.uk/conditions/giardiasis/

  Giardiasis is a tummy bug that causes symptoms like diarrhoea, farting and bloating. It usually goes away in about a week if it’s treated, but it can sometimes last much longer. […] The main symptoms of giardiasis are: smelly diarrhoea, tummy pain or cramps, farting (flatulence), smelly burps they may smell like eggs, bloating, weight loss. […] It’s treated with antibiotics. Your symptoms should stop in about a week, but they can sometimes last longer.

• #1 Patient education: Giardia (Beyond the Basics) – UpToDate

  https://www.uptodate.com/contents/giardia-beyond-the-basics/print

  Giardia infections do not always cause symptoms. Some people carry the organism without ever knowing it. Some people develop symptoms and then get better without treatment because they combat the infection on their own. When symptoms do arise, they can include: […] People generally develop these symptoms one to two weeks after being exposed to Giardia, and the symptoms often last at least two to four weeks. Some people develop a chronic form of Giardia that lasts even longer, although symptoms tend to become less severe over time. […] Giardia can also interfere with the way the body absorbs nutrients, so it can cause vitamin deficiencies and other nutritional problems. In up to 40 percent of cases, Giardia impairs the body’s ability to digest lactose, the form of sugar found in milk, cheese, and other dairy products.

• #1 Giardiasis (for Parents) | Nemours KidsHealth

  https://kidshealth.org/en/parents/giardiasis.html

  Giardiasis, a top cause of diarrhea, is an intestinal illness that can pass easily from person to person. […] Giardiasis is caused by the tiny Giardia parasite. The parasite attaches itself to the lining of the small intestines in humans, where it causes diarrhea and blocks the body’s absorption of fats and carbohydrates from digested foods. […] Many people with giardiasis have no signs or symptoms of illness, even though they are infected. […] When the parasite does cause symptoms, the illness usually begins with severe watery diarrhea. Then, the stool becomes greasy and smells very bad. […] Other symptoms include: abdominal cramps, low energy (malaise), lots of intestinal gas, an enlarged belly from the gas, loss of appetite, nausea and vomiting, sometimes a low-grade fever. […] These symptoms may last for 16 weeks. They can last longer in some people, or get better and come back. If symptoms last a while, a child may lose weight or show other signs of poor nutrition. […] Most kids are better within a week of taking medicine to kill the parasites. Medicine also shortens the time that they’re contagious. If giardiasis isn’t treated, symptoms can last up to 6 weeks or longer.

• #1 Giardiasis (beaver fever)

  https://www.health.ny.gov/diseases/communicable/giardiasis/fact_sheet.htm

  Giardiasis is an intestinal (bowel) illness caused by a microscopic parasite called Giardia. It is a common illness that causes diarrhea (loose stool/poop). […] People exposed to Giardia may experience mild or severe diarrhea (loose stool/poop), gas, stomach cramps, nausea (a feeling of upset in the stomach), or dehydration (loss of water in the body causing weakness of dizziness). Some people experience no symptoms at all. Fever is rarely present. Occasionally, some people will have chronic diarrhea over several weeks or months, with significant weight loss. […] The symptoms may appear from 3 to 25 days after exposure but usually within 7 to 14 days.

• #1 Giardiasis (Giardia Infection): Symptoms, Causes, Treatment

  https://www.webmd.com/digestive-disorders/giardiasis-overview

  Symptoms usually start 1-3 weeks after you’re exposed. They’ll probably last for 2-6 weeks. The most common include: Diarrhea, Gas or flatulence, Greasy stool that floats, Stomach or abdominal cramps, Upset stomach or nausea, Dehydration, Weight loss. […] If you have any of these symptoms for more than a week, call your doctor to see if you should be tested for giardiasis. It’s possible for a giardia infection to get better on its own, but you may need to have treatment. […] Giardiasis can cause problems even after the infection has gone away. These can be especially serious in infants and children. Dehydration. This is when your body doesn’t have enough water to work normally. It’s often the result of severe diarrhea. Failure to thrive. Long-term diarrhea can affect a child’s mental and physical growth. Lactose intolerance. Many people who have a giardia infection find they can’t digest milk sugar (lactose) the way they used to. This can make it hard to eat milk, cheese, and other dairy foods.

• #1 Giardia Infection: Causes, Symptoms, and Treatment

  https://patient.info/travel-and-vaccinations/travellers-diarrhoea-leaflet/giardia

  Because of the severity of the diarrhoea, some people with giardia infection, particularly children, can become dehydrated. It is common to lose some weight as well during this acute infection. […] In some people, symptoms may be less acute in their onset. A more chronic diarrhoea can develop which may be persistent or may come and go. Stools (faeces) tend to be smelly and fatty/greasy. […] Other chronic symptoms include: Tiredness. Feeling sick (nausea). Reduced appetite. Weight loss. Belching (burping). Bloating. Heartburn. Vitamin deficiencies. […] Chronic giardia infection can last for months, or even years, if it goes undiagnosed and untreated. […] If diarrhoea caused by giardia infection is severe, lack of fluid in the body (dehydration) can occur.

• #1 Giardiasis: What It Is, Symptoms, Treatments & Medications

  https://my.clevelandclinic.org/health/diseases/15238-giardiasis

  These symptoms are short-lived for most people. They go away when the infection does. But if giardiasis lasts a long time, or keeps coming back, it can do more long-term damage. This might happen if you have a weaker immune system, possibly from a preexisting health condition. In developing countries, malnutrition and lower health status can make people more vulnerable to complications from giardiasis. […] Possible complications include dehydration, gastrointestinal disease, and autoimmune disease.

• #1 Giardiasis – Wikipedia

  https://en.wikipedia.org/wiki/Giardiasis

  This malabsorption causes fatty stools, substantial weight loss, and fatigue. […] Additionally, those with giardiasis often have difficulty absorbing lactose, vitamin A, folate, and vitamin B12. […] In children, prolonged giardiasis can cause failure to thrive and may impair mental development. […] Symptomatic infections are well recognised as causing lactose intolerance, which, though usually temporary, may become permanent.

• #1 Giardiasis (giardia) | healthdirect

  https://www.healthdirect.gov.au/giardiasis

  Giardiasis is an infection of the small intestine, caused by the giardia parasite from infected water or faeces. […] You may have no symptoms, but some people can have diarrhoea, stomach cramps and nausea that may last for months. […] The most common symptoms are: diarrhoea, which may be pale, greasy and smelly; stomach cramps or bloating; excessive gas or flatulence (wind); nausea; fatigue; weight loss. […] Symptoms of giardiasis start 3 to 25 days after infection with the parasite. They may last for months, especially if left untreated. […] Some people do not develop symptoms, but they can still pass the disease on to others. […] Having a giardia infection for a long time can cause long-term effects, such as weight loss or malnutrition, and possibly poor growth and development in children. […] Some people develop lactose intolerance after having giardiasis. This usually goes away by itself.

• #1 Patient education: Giardia (Beyond the Basics) – UpToDate

  https://www.uptodate.com/contents/giardia-beyond-the-basics/print

  After being treated for Giardia and seeing symptoms improve, some people experience a relapse. This can happen because people are still infected with Giardia or because of changes in the intestine that cause heightened sensitivity to certain foods. […] Giardia infection can interfere with the intestinal flora (the 'bugs’ that normally live in the intestine) and may lead to inflammation within the bowel that persists even after treatment of the acute infection. Therefore, ongoing difficulties in the body’s ability to digest various foods may develop, especially digestion of dairy products. Even once the infection is gone, it can take several weeks before normal digestion returns.

• #1 Giardia infection – including symptoms, treatment and prevention | SA Health

  https://www.sahealth.sa.gov.au/wps/wcm/connect/public+content/sa+health+internet/conditions/infectious+diseases/giardia+infection/giardia+infection+-+including+symptoms+treatment+and+prevention

  Giardia infection is an infection of the bowel caused by the parasite Giardia duodenalis, also known as Giardia lamblia or Giardia intestinalis. It is a single-celled organism found worldwide. […] The most common symptoms include: stomach cramps, excessive gas or bloating, diarrhoea, which may be watery, usually lasting 1 to several weeks, frequent loose or pale, greasy faeces which may float in the toilet bowl, fatigue, weight loss, lactose intolerance may occur in 20 to 40% of cases and last several weeks. […] Giardia infections do not usually cause fever or bloody diarrhoea. […] The infection is diagnosed by examining the faeces by a microscope or using a PCR (polymerase chain reaction) test in a pathology laboratory. […] The incubation period (time between becoming infected and developing symptoms) is 3 to 25 days or longer (usually 7 to 10 days).

• #1 Giardia infection (giardiasis) – Symptoms & causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/giardia-infection/symptoms-causes/syc-20372786

  Giardia infection is an intestinal infection marked by stomach cramps, bloating, nausea and bouts of watery diarrhea. […] For those who do get sick, signs and symptoms usually appear one to three weeks after exposure and may include: […] Signs and symptoms of giardia infection may last two to six weeks, but in some people they last longer or recur.

• #1

• #1 Giardiasis – familydoctor.org

  https://familydoctor.org/condition/giardiasis/

  Call your doctor if you have diarrhea, bloating, and nausea for more than a week. Giardiasis is unpleasant, but it’s not usually dangerous. Once you begin the medicine, you can recover in about a week. If it’s left untreated, symptoms can last 6 weeks or more. […] As with any illness, complications can occur. These include: Dehydration – losing too much water and other fluids in your body. Malabsorption – when the intestinal tract doesn’t absorb enough nutrients from your food. Weight loss – excessive diarrhea can cause you to lose too much weight too fast. Call your doctor if you’ve been treated for giardiasis but are experiencing any of these symptoms.

• #1 Irritable Bowel Syndrome with predominant diarrhea and giardiasis: Is it one or the other? | Gastroenterología y Hepatología (English Edition)

  https://www.elsevier.es/en-revista-gastroenterologia-hepatologia-english-edition–382-articulo-irritable-bowel-syndrome-with-predominant-S2444382418302050

  Finally, an endoscopy was performed with duodenal biopsies to rule out another malabsorption disorder, and possible duodenal giardiasis, although the stool cultures/ova and parasite exams had been repeatedly negative, with no eggs or trophozoites detected. […] There are studies that find a strong association between giardiasis and post-infectious IBS (PI-IBS) in young people. […] Moreover, individuals with giardiasis are approximately four times more likely to be diagnosed with IBS 90 days after the diagnosis of giardiasis than those without giardiasis. […] In terms of the relationship between the two disorders, giardiasis may be a trigger for the exacerbation of IBS, but the parasitic infection is no longer necessary for the symptoms to persist once they have become established. […] From our experience, we recommend performing a PCR assay on a stool sample in patients with symptoms suggestive of IBS-D who have travelled abroad, particularly to low-income areas (risk factor for giardiasis), who have persistent diarrhea, even if stool investigations, including stool cultures and ova and parasite exam, are persistently negative.

• #1 Giardiasis – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK513239/

  Nearly half of the individuals infected with giardiasis are asymptomatic. The onset of symptoms is typically 1 to 2 weeks after infection for those with symptoms. Typical symptoms include abdominal pain, nausea, and flatulence, accompanied by large volume, watery, foul-smelling, and greasy stools. […] Extraintestinal manifestations in giardiasis are rare and can manifest as allergic reactions like urticaria, bronchospasm, erythema multiforme, reactive arthritis, and biliary tract disease. These symptoms are likely a result of the activation of the host’s immune system. […] The prognosis for patients with giardiasis is generally excellent, as most infections are self-limited. […] Potential complications include weight loss, disaccharidase deficiency, growth retardation, and malabsorption.

• #1 Giardiasis in Kids: A McKinney Pediatrician’s Guide to Symptoms & Care

  https://www.kidsvillepeds.com/blog/1234640-the-silent-parasite-a-mckinney-pediatricians-guide-to-recognizing-giardiasis-symptoms-in-kids/

  Timely diagnosis is crucial to prevent symptoms from worsening or spreading the infection to others, as any McKinney clinic would advise. […] While giardiasis often resolves with treatment, some cases may lead to complications, particularly in younger children or those with weakened immune systems. Potential complications include: Chronic Diarrhea: Persistent infection can lead to chronic diarrhea, affecting a child’s growth and health. Malnutrition: Nutrient malabsorption may result in deficiencies of essential vitamins and minerals. Lactose Intolerance: Temporary lactose intolerance can develop due to intestinal damage, causing additional digestive issues. […] Giardiasis in children is preventable and treatable with proper care and hygiene. Recognizing symptoms early, seeking timely treatment, and practicing preventive measures can make a significant difference in managing this infection.

• #1 Your Ultimate Guide To Parasite Giardia And Treatments

  https://sydneygutclinic.com/your-guide-to-parasite-giardia-and-treatments/

  There is no set duration for how long giardia infections can last in humans as it tends to vary. In some cases, individuals may clear the infection on their own without experiencing symptoms, whilst others may develop symptoms that persist for several weeks or even months. The ability of the body to naturally clear the infection can depend on various factors, including the individuals immune response, overall health, and the specific strain of giardia involved.

• #1 Giardiasis | University Hospitals

  https://www.uhhospitals.org/health-information/health-and-wellness-library/article/diseases-and-conditions/giardiasis

  Symptoms of giardiasis may include: […] Symptoms include explosive, watery, greasy, and foul-smelling stools. You may also have bloating, nausea, pain, gas, fatigue, and loss of appetite. […] The time between infection and the start of symptoms is usually from 1 to 2 weeks. Some infected people have very mild symptoms or no symptoms at all. The symptoms of giardiasis are a lot like those of other gastrointestinal diseases.

• #1 Giardia – Fit for Travel

  https://www.fitfortravel.nhs.uk/advice/disease-prevention-advice/giardia

  Giardiasis is an infection spread mainly through food and water that causes diarrhoea that can last for a long time. […] Symptoms usually start 1 to 3 weeks after the parasite is ingested. Infection causes watery diarrhoea that can last for weeks to months. Often the diarrhoea floats in the toilet bowl as it contains undigested fat. Feeling sick, being sick, loss of appetite, tummy cramps, bloating, wind and weight loss can also occur. […] After the infection has resolved some people may suffer from irritable bowel like symptoms that can last a long time.

• #1 Giardiasis in patients with dyspeptic symptoms

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4355762/

  AIM: To investigate the prevalence of giardiasis in patients with dyspeptic symptoms. […] In patients with giardiasis, abdominal pain was present in 71% (68/96) of patients (P = 0.02) and diarrhea in 29% (28/96) (P = 0.005); duodenitis in 25% (24/96) on EGD (P = 0.006) and in 68% (65/96) on histopathology (P = 0.002). […] Giardiasis occurs significantly in young people with abdominal pain, while endoscopic duodenitis is seen in only 25% of giardiasis positive cases, which supports routine duodenal biopsy. […] Patients with giardiasis typically present with diarrhea, vague abdominal discomfort, nausea and distention together with mild weight loss and lassitude. […] The presentation of giardiasis varies and for diagnosis it requires a high degree of suspicion in the appropriate clinical setting. Examination of duodenal biopsy from patients presenting with abdominal pain should be considered so as to prevent missing diagnosis of giardiasis. Giardiasis is diagnosed more often on EGD with duodenal biopsy rather than on stool examination.

• #1 Giardia | Caring for kids

  https://caringforkids.cps.ca/handouts/health-conditions-and-treatments/giardia

  Giardia affects children differently. Some have no symptoms, while others may have: watery diarrhea or mushy bowel movements (which may have a very bad smell), stomach cramps or nausea, severe gas, loss of appetite, dehydration, and/or weight loss. The symptoms can last from 2 to 6 weeks. […] If your child has symptoms, your doctor will ask you to provide a stool sample. It can be hard to detect Giardia so you may have to provide more than one sample. […] See your doctor as soon as possible if your child: is vomiting and showing any sign of dehydration, such as no tears when crying, dry skin, mouth and tongue, fewer than 4 wet diapers in 24 hours, has a fever and is less than 6 months old or has had a fever for more than 72 hours (3 days), is breathing rapidly, has grayish skin, has severe belly pain, has severe diarrhea, or has bloody or black stools.

• #1 Giardia infection – including symptoms, treatment and prevention | SA Health

  https://www.sahealth.sa.gov.au/wps/wcm/connect/public+content/sa+health+internet/conditions/infectious+diseases/giardia+infection/giardia+infection+-+including+symptoms+treatment+and+prevention

  The infectious period (time during which an infected person can infect others) is for as long as the organism is present in the faeces (often months), whether or not the person is ill. A person with diarrhoea is more likely to spread infection, but an infected person without symptoms can still spread the parasite to others.

• #2 Giardiasis – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK513239/

  Giardiasis, caused by the protozoa Giardia duodenalis (also called Giardia intestinalis and Giardia lamblia), is a prevalent small intestinal infection marked by symptoms such as watery diarrhea and flatulence. […] Individuals with giardiasis often present with complaints of flatulence and watery diarrhea. […] While some individuals may remain asymptomatic, others can experience severe manifestations leading to dehydration and weight loss. […] Symptoms typically resolve on their own within 4 weeks of onset. Individuals may present with weight loss and show signs or symptoms of vitamin deficiency in chronic infections. […] Diarrhea is the most predominant symptom in acute cases, affecting 90% of symptomatic patients. Additionally, 70% to 75% of symptomatic individuals experience abdominal cramping, flatulence, and bloating. Chronic giardiasis is characterized by persistent diarrhea, weight loss, nausea, malaise, and anorexia.

• #2 Symptoms of Giardia Infection | Giardia | CDC

  https://www.cdc.gov/giardia/signs-symptoms/index.html

  Diarrhea is the most common symptom of Giardia infection. […] Giardia can cause short-term symptoms, long-term symptoms, or no symptoms at all. […] Symptoms often begin by having diarrhea 2 to 5 times per day and feeling more and more tired. However, Giardia infections do not always cause symptoms. […] Symptoms usually start 1 to 2 weeks after swallowing Giardia germs. They typically last for 2 to 6 weeks. Symptoms may last longer than 6 weeks, especially if you have a weakened immune system (for example, due to an illness such as HIV). […] Occasionally, Giardia infection causes long-term symptoms that can last for years. […] Complications and long-term symptoms can include: Reactive arthritis (joint pain), Irritable bowel syndrome, which causes stomach pain and other symptoms, Recurring diarrhea, Weight loss, Other symptoms caused by not being able to absorb nutrients, such as fat or vitamin B12. […] For children, a serious Giardia infection may: Delay physical and mental growth, Slow development, Prevent them from absorbing nutrients from their food (malnutrition).

• #2 Giardia infection (giardiasis) – Symptoms & causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/giardia-infection/symptoms-causes/syc-20372786

  Giardia infection is an intestinal infection marked by stomach cramps, bloating, nausea and bouts of watery diarrhea. […] For those who do get sick, signs and symptoms usually appear one to three weeks after exposure and may include: […] Signs and symptoms of giardia infection may last two to six weeks, but in some people they last longer or recur.

• #2 Giardia Infection: Causes, Symptoms, and Treatment

  https://patient.info/travel-and-vaccinations/travellers-diarrhoea-leaflet/giardia

  In about half the people infected with giardia, there are no symptoms of giardiasis following infection as it is cleared by their immune system. […] If symptoms do occur, they usually develop one to two weeks after first contact with the giardia. Symptoms of giardia infection can be divided into sudden-onset (acute) and persistent (chronic) diarrhoea symptoms. […] Acute diarrhoea is the most common presentation of giardia infection. There is a sudden onset of diarrhoea which is often explosive and watery. […] Other very common symptoms are: Nausea (feeling sick). Cramping abdominal pains. Bloating. Farting (passing wind) a lot with very smelly farts. […] The symptoms usually settle down after a few days but diarrhoea can continue for more than a week. Vomiting and fever are less common symptoms with giardia infection.

• #2 Giardiasis Symptoms, Treatment, Diagnosis & Cause

  https://www.emedicinehealth.com/giardiasis/article_em.htm

  Giardiasis is the name of the disease caused by Giardia lamblia parasites that infect the small bowel. […] Symptoms of giardiasis are variable; some people have no symptoms but still pass cysts in the stool and are considered carriers of the parasite while others may develop acute or chronic diarrheal illnesses that begin to show symptoms in one to two weeks after swallowing cysts. […] Symptoms and signs of acute giardiasis are profuse watery diarrhea that later becomes greasy and foul-smelling with occasional bloating, abdominal cramping, and passing gas (flatulence). […] Chronic diarrheal illness symptoms include greasy, foul-smelling, yellowish diarrhea, weight loss, and abdominal pain. […] Acute diarrheal illness may have the following signs and symptoms: Diarrhea: Most people with giardiasis complain of diarrhea. Stool is usually described as profuse and watery early in the disease. Later in the disease, stools become greasy, foul-smelling, and often floats.

• #2 Giardiasis (giardia) | healthdirect

  https://www.healthdirect.gov.au/giardiasis

  Giardiasis is an infection of the small intestine, caused by the giardia parasite from infected water or faeces. […] You may have no symptoms, but some people can have diarrhoea, stomach cramps and nausea that may last for months. […] The most common symptoms are: diarrhoea, which may be pale, greasy and smelly; stomach cramps or bloating; excessive gas or flatulence (wind); nausea; fatigue; weight loss. […] Symptoms of giardiasis start 3 to 25 days after infection with the parasite. They may last for months, especially if left untreated. […] Some people do not develop symptoms, but they can still pass the disease on to others. […] Having a giardia infection for a long time can cause long-term effects, such as weight loss or malnutrition, and possibly poor growth and development in children. […] Some people develop lactose intolerance after having giardiasis. This usually goes away by itself.

• #2 Giardiasis Clinical Presentation: History, Physical Examination

  https://emedicine.medscape.com/article/176718-clinical

  A small number of persons develop abrupt onset of explosive, watery diarrhea; abdominal cramps; foul-smelling flatus; vomiting; fever; and malaise. These symptoms may last 3-4 days before transitioning into the more common subacute syndrome. Most patients experience a more insidious onset of symptoms, which may be recurrent or resistant. […] Stools often become malodorous, soft, and greasy. Watery diarrhea may alternate with soft stools or even constipation. Upper gastrointestinal symptoms, often exacerbated by eating, accompany stool changes or may be present in the absence of soft stools. These include upper and midabdominal cramping, nausea, early satiety, bloating, substernal burning, and acid indigestion. […] Anorexia, fatigue, malaise, and weight loss are common. Chronic illness may occur. Adults may present with a long-standing malabsorption syndrome, and children with failure to thrive.

• #2 Giardiasis (for Parents) | Nemours KidsHealth

  https://kidshealth.org/en/parents/giardiasis.html

  Giardiasis, a top cause of diarrhea, is an intestinal illness that can pass easily from person to person. […] Giardiasis is caused by the tiny Giardia parasite. The parasite attaches itself to the lining of the small intestines in humans, where it causes diarrhea and blocks the body’s absorption of fats and carbohydrates from digested foods. […] Many people with giardiasis have no signs or symptoms of illness, even though they are infected. […] When the parasite does cause symptoms, the illness usually begins with severe watery diarrhea. Then, the stool becomes greasy and smells very bad. […] Other symptoms include: abdominal cramps, low energy (malaise), lots of intestinal gas, an enlarged belly from the gas, loss of appetite, nausea and vomiting, sometimes a low-grade fever. […] These symptoms may last for 16 weeks. They can last longer in some people, or get better and come back. If symptoms last a while, a child may lose weight or show other signs of poor nutrition. […] Most kids are better within a week of taking medicine to kill the parasites. Medicine also shortens the time that they’re contagious. If giardiasis isn’t treated, symptoms can last up to 6 weeks or longer.

• #2 Giardiasis: What It Is, Symptoms, Treatments & Medications

  https://my.clevelandclinic.org/health/diseases/15238-giardiasis

  About half of people never develop symptoms of giardiasis. Among those who do, common symptoms include watery diarrhea, fatty or greasy poop that floats, stomach pain and cramping, intestinal gas and bloating, nausea and loss of appetite, and increasing fatigue. […] Most people have short-term symptoms during their infection, but occasionally, some people have longer-lasting or recurring symptoms. They might develop dehydration and weight loss from the chronic diarrhea and nausea. Sometimes, they develop lasting digestive difficulties, like lactose intolerance. […] Symptoms typically last between two and six weeks, but in some people, they can last longer. […] Giardia infection doesn’t always cause noticeable symptoms, but it can. Some symptoms are due to the parasite itself, and others are due to your body activating to remove the parasite. For example, the parasite feeding off your nutrients might sap your energy, making you feel increasingly tired. Diarrhea, swelling and skin reactions are symptoms of inflammation, part of your immune system’s response.

• #2 Giardiasis: Causes, Symptoms, and Treatment

  https://www.healthline.com/health/giardiasis

  Some people can carry giardia parasites without experiencing any symptoms. Symptoms of giardiasis generally show up one or two weeks after exposure. Common symptoms include: fatigue, nausea, diarrhea or greasy stools, loss of appetite, vomiting, bloating and abdominal cramps, weight loss, excessive gas, headaches, abdominal pain. […] Giardiasis infections usually last about six to eight weeks, but problems such as lactose intolerance can persist after the infection clears up.

• #2 Giardia infection – including symptoms, treatment and prevention | SA Health

  https://www.sahealth.sa.gov.au/wps/wcm/connect/public+content/sa+health+internet/conditions/infectious+diseases/giardia+infection/giardia+infection+-+including+symptoms+treatment+and+prevention

  Giardia infection is an infection of the bowel caused by the parasite Giardia duodenalis, also known as Giardia lamblia or Giardia intestinalis. It is a single-celled organism found worldwide. […] The most common symptoms include: stomach cramps, excessive gas or bloating, diarrhoea, which may be watery, usually lasting 1 to several weeks, frequent loose or pale, greasy faeces which may float in the toilet bowl, fatigue, weight loss, lactose intolerance may occur in 20 to 40% of cases and last several weeks. […] Giardia infections do not usually cause fever or bloody diarrhoea. […] The infection is diagnosed by examining the faeces by a microscope or using a PCR (polymerase chain reaction) test in a pathology laboratory. […] The incubation period (time between becoming infected and developing symptoms) is 3 to 25 days or longer (usually 7 to 10 days).

• #2 Patient education: Giardia (Beyond the Basics) – UpToDate

  https://www.uptodate.com/contents/giardia-beyond-the-basics/print

  After being treated for Giardia and seeing symptoms improve, some people experience a relapse. This can happen because people are still infected with Giardia or because of changes in the intestine that cause heightened sensitivity to certain foods. […] Giardia infection can interfere with the intestinal flora (the 'bugs’ that normally live in the intestine) and may lead to inflammation within the bowel that persists even after treatment of the acute infection. Therefore, ongoing difficulties in the body’s ability to digest various foods may develop, especially digestion of dairy products. Even once the infection is gone, it can take several weeks before normal digestion returns.

• #2 Giardiasis – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK513239/

  Nearly half of the individuals infected with giardiasis are asymptomatic. The onset of symptoms is typically 1 to 2 weeks after infection for those with symptoms. Typical symptoms include abdominal pain, nausea, and flatulence, accompanied by large volume, watery, foul-smelling, and greasy stools. […] Extraintestinal manifestations in giardiasis are rare and can manifest as allergic reactions like urticaria, bronchospasm, erythema multiforme, reactive arthritis, and biliary tract disease. These symptoms are likely a result of the activation of the host’s immune system. […] The prognosis for patients with giardiasis is generally excellent, as most infections are self-limited. […] Potential complications include weight loss, disaccharidase deficiency, growth retardation, and malabsorption.

• #2 Giardiasis – familydoctor.org

  https://familydoctor.org/condition/giardiasis/

  Call your doctor if you have diarrhea, bloating, and nausea for more than a week. Giardiasis is unpleasant, but it’s not usually dangerous. Once you begin the medicine, you can recover in about a week. If it’s left untreated, symptoms can last 6 weeks or more. […] As with any illness, complications can occur. These include: Dehydration – losing too much water and other fluids in your body. Malabsorption – when the intestinal tract doesn’t absorb enough nutrients from your food. Weight loss – excessive diarrhea can cause you to lose too much weight too fast. Call your doctor if you’ve been treated for giardiasis but are experiencing any of these symptoms.

• #2 Giardia | Caring for kids

  https://caringforkids.cps.ca/handouts/health-conditions-and-treatments/giardia

  Giardia affects children differently. Some have no symptoms, while others may have: watery diarrhea or mushy bowel movements (which may have a very bad smell), stomach cramps or nausea, severe gas, loss of appetite, dehydration, and/or weight loss. The symptoms can last from 2 to 6 weeks. […] If your child has symptoms, your doctor will ask you to provide a stool sample. It can be hard to detect Giardia so you may have to provide more than one sample. […] See your doctor as soon as possible if your child: is vomiting and showing any sign of dehydration, such as no tears when crying, dry skin, mouth and tongue, fewer than 4 wet diapers in 24 hours, has a fever and is less than 6 months old or has had a fever for more than 72 hours (3 days), is breathing rapidly, has grayish skin, has severe belly pain, has severe diarrhea, or has bloody or black stools.

• #2 Giardiasis: What It Is, Symptoms, Treatments & Medications

  https://my.clevelandclinic.org/health/diseases/15238-giardiasis

  These symptoms are short-lived for most people. They go away when the infection does. But if giardiasis lasts a long time, or keeps coming back, it can do more long-term damage. This might happen if you have a weaker immune system, possibly from a preexisting health condition. In developing countries, malnutrition and lower health status can make people more vulnerable to complications from giardiasis. […] Possible complications include dehydration, gastrointestinal disease, and autoimmune disease.

• #2 Giardiasis – Wikipedia

  https://en.wikipedia.org/wiki/Giardiasis

  This malabsorption causes fatty stools, substantial weight loss, and fatigue. […] Additionally, those with giardiasis often have difficulty absorbing lactose, vitamin A, folate, and vitamin B12. […] In children, prolonged giardiasis can cause failure to thrive and may impair mental development. […] Symptomatic infections are well recognised as causing lactose intolerance, which, though usually temporary, may become permanent.

• #2 Patient education: Giardia (Beyond the Basics) – UpToDate

  https://www.uptodate.com/contents/giardia-beyond-the-basics/print

  Giardia infections do not always cause symptoms. Some people carry the organism without ever knowing it. Some people develop symptoms and then get better without treatment because they combat the infection on their own. When symptoms do arise, they can include: […] People generally develop these symptoms one to two weeks after being exposed to Giardia, and the symptoms often last at least two to four weeks. Some people develop a chronic form of Giardia that lasts even longer, although symptoms tend to become less severe over time. […] Giardia can also interfere with the way the body absorbs nutrients, so it can cause vitamin deficiencies and other nutritional problems. In up to 40 percent of cases, Giardia impairs the body’s ability to digest lactose, the form of sugar found in milk, cheese, and other dairy products.

• #2 Giardiasis – Infectious Diseases – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/infectious-diseases/intestinal-protozoa-and-microsporidia/giardiasis

  Many cases of giardiasis are asymptomatic. However, asymptomatic people can pass infective cysts. […] Symptoms of acute giardiasis usually appear 1 to 14 days (average 7 days) after infection. They are usually mild and include watery malodorous diarrhea, abdominal cramps and distention, flatulence, eructation, intermittent nausea, epigastric discomfort, and sometimes low-grade malaise, fatigue, and anorexia. Acute giardiasis usually lasts 1 to 3 weeks. Giardiasis is often accompanied by acquired lactose-intolerance. Malabsorption of fat and sugars can lead to significant weight loss in severe cases. Neither blood nor white blood cells are present in stool. […] A subset of infected patients develop chronic diarrhea with foul stools, abdominal distention, and malodorous flatus. Substantial weight loss and fatigue may occur. Chronic giardiasis occasionally causes failure to thrive in children. […] Even after parasitologic cure, patients may experience lactose intolerance, irritable bowel syndrome, or fatigue that last for weeks to months. Symptoms may persist after parasite clearance.

• #2 Giardia: Infection, treatment and prevention | Cornell University College of Veterinary Medicine

  https://www.vet.cornell.edu/departments-centers-and-institutes/riney-canine-health-center/canine-health-information/giardia-infection-treatment-and-prevention

  Giardiasis is a common parasitic infection that can cause diarrhea in dogs. […] Some dogs infected with Giardia may not show any signs of infection, but younger dogs or dogs with weakened immune systems are more likely to experience symptoms. […] Patients will often be asymptomatic and still have a normal appetite and energy levels. In severe cases, dogs may experience lethargy, decreased appetite or weight loss. […] The most common clinical signs of Giardiasis include: Acute or sudden diarrhea, Soft or watery stool with mucus and a foul odor, Abdominal discomfort. […] With proper treatment, most dogs fully recover from giardiasis. […] If diarrhea continues after treatment, your veterinarian may need to recheck a stool sample to see whether your dog has been reinfected. […] Dogs may become reinfected if their surrounding environment is not properly managed. Additionally, if the Giardia is resistant to the medication used or if the medication was not dosed properly, then refractory infections may also occur.

• #2 Irritable Bowel Syndrome with predominant diarrhea and giardiasis: Is it one or the other? | Gastroenterología y Hepatología (English Edition)

  https://www.elsevier.es/en-revista-gastroenterologia-hepatologia-english-edition–382-articulo-irritable-bowel-syndrome-with-predominant-S2444382418302050

  Finally, an endoscopy was performed with duodenal biopsies to rule out another malabsorption disorder, and possible duodenal giardiasis, although the stool cultures/ova and parasite exams had been repeatedly negative, with no eggs or trophozoites detected. […] There are studies that find a strong association between giardiasis and post-infectious IBS (PI-IBS) in young people. […] Moreover, individuals with giardiasis are approximately four times more likely to be diagnosed with IBS 90 days after the diagnosis of giardiasis than those without giardiasis. […] In terms of the relationship between the two disorders, giardiasis may be a trigger for the exacerbation of IBS, but the parasitic infection is no longer necessary for the symptoms to persist once they have become established. […] From our experience, we recommend performing a PCR assay on a stool sample in patients with symptoms suggestive of IBS-D who have travelled abroad, particularly to low-income areas (risk factor for giardiasis), who have persistent diarrhea, even if stool investigations, including stool cultures and ova and parasite exam, are persistently negative.

• #2 Giardiasis Clinical Presentation: History, Physical Examination

  https://emedicine.medscape.com/article/176718-clinical

  Clinical signs and symptoms of giardiasis include the following: Diarrhea, malaise, weakness, abdominal distention, flatulence, abdominal cramps, nausea, malodorous, greasy stools, anorexia, weight loss, vomiting, low-grade fever (infrequent), and various neurologic symptoms (eg, irritability, sleep disorder, mental depression, neurasthenia) […] Diarrhea is the most common symptom of acute Giardia infection, occurring in 90% of symptomatic subjects. Abdominal cramping, bloating, and flatulence occur in 70-75% of symptomatic patients. […] Symptoms of chronic infection include chronic diarrhea, malaise, nausea, and anorexia. Weight loss, as much as 10-15 pounds in adults, occurs in approximately 66% of symptomatic patients. Chronic sporadic diarrhea may continue for months. Postinfection lactase deficiency also is a common finding, occurring in up to 40% of cases.

• #3 Giardiasis: What It Is, Symptoms, Treatments & Medications

  https://my.clevelandclinic.org/health/diseases/15238-giardiasis

  These symptoms are short-lived for most people. They go away when the infection does. But if giardiasis lasts a long time, or keeps coming back, it can do more long-term damage. This might happen if you have a weaker immune system, possibly from a preexisting health condition. In developing countries, malnutrition and lower health status can make people more vulnerable to complications from giardiasis. […] Possible complications include dehydration, gastrointestinal disease, and autoimmune disease.

• #4 Symptoms of Giardia infection (giardiasis) – Canada.ca

  https://www.canada.ca/en/public-health/services/diseases/giardia-infection/symptoms.html

  The most common symptoms of Giardia infection include: gas, diarrhea, weight loss, dehydration, stomach cramps or pain, nausea or upset stomach. […] These symptoms usually appear 1 to 3 weeks after infection and usually last 2 to 6 weeks. […] Some people may not show any symptoms of illness. […] Children and people with weakened immune systems may experience more severe symptoms.

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