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• #1 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #2 Hypothyroidism | Hashimoto’s Disease | MedlinePlus

  https://medlineplus.gov/hypothyroidism.html

  Hypothyroidism, or underactive thyroid, happens when your thyroid gland doesn’t make enough thyroid hormones to meet your body’s needs. […] The symptoms of hypothyroidism can vary from person to person and may include: Fatigue, Weight gain, A puffy face, Trouble tolerating cold, Joint and muscle pain, Constipation, Dry skin, Dry, thinning hair, Decreased sweating, Heavy or irregular menstrual periods, Fertility problems in women, Depression, Slowed heart rate, Goiter, an enlarged thyroid that may cause your neck to look swollen. Sometimes it can cause trouble with breathing or swallowing. […] Because hypothyroidism develops slowly, many people don’t notice symptoms of the disease for months or even years. […] Hypothyroidism can contribute to high cholesterol. In rare cases, untreated hypothyroidism can cause myxedema coma. This is a condition in which your body’s functions slow down to the point that it becomes life-threatening. […] During pregnancy, hypothyroidism can cause complications, such as premature birth, high blood pressure in pregnancy, and miscarriage. It can also slow the baby’s growth and development.

• #3 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #4

  https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/symptoms/

  Many symptoms of an underactive thyroid (hypothyroidism) are the same as those of other conditions, so it can easily be confused for something else. […] Symptoms usually develop slowly and you may not realise you have a medical problem for several years. […] Common symptoms include: tiredness, being sensitive to cold, weight gain, constipation, depression, slow movements and thoughts, muscle aches and weakness, muscle cramps, dry and scaly skin, brittle hair and nails, loss of libido (sex drive), pain, numbness and a tingling sensation in the hand and fingers (carpal tunnel syndrome), irregular periods or heavy periods. […] Elderly people with an underactive thyroid may develop memory problems and depression. Children may experience slower growth and development. Teenagers may start puberty earlier than normal.

• #5 Hypothyroidism (Underactive Thyroid): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/12120-hypothyroidism

  Hypothyroidism is when your thyroid gland doesnt make and release enough hormone into your bloodstream. The condition slows down your metabolism, which may make you gain weight unexpectedly or feel tired all the time. […] Hypothyroidism symptoms may include fatigue, hoarseness, weight gain, muscle weakness, numbness, brain fog and depression. Hypothyroidism can cause varying symptoms and may mimic other conditions. […] Hypothyroidism symptoms usually develop slowly over time. In some cases, it can take years. Some possible symptoms include: Brain fog (forgetfulness or difficulty concentrating), Depression and anxiety, Dry, coarse skin and hair, Elevated blood cholesterol levels, Feeling tired (fatigue), Frequent or heavy menstrual periods, Hoarseness, Inability to tolerate cold temperatures, Numbness or tingling in your hands, Physical changes in your face (drooping eyelids, puffiness around your eyes), Soreness or muscle weakness, Unexplained weight gain.

• #6

  https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/

  An underactive thyroid gland (hypothyroidism) is where your thyroid gland does not produce enough hormones. […] Common signs of an underactive thyroid are tiredness, weight gain and feeling depressed. […] Symptoms of an underactive thyroid are often similar to those of other conditions, and they usually develop slowly, so you may not notice them for years. […] You should see a GP and ask to be tested for an underactive thyroid if you have symptoms including: tiredness, weight gain, depression, being sensitive to the cold, dry skin and hair, muscle aches. […] If an underactive thyroid is not treated, it can lead to complications, including heart disease, goitre, pregnancy problems and a life-threatening condition called myxoedema coma (although this is very rare). […] Many of the body’s functions slow down when the thyroid does not produce enough of these hormones.

• #7 Hypothyroidism symptoms linger despite medication use, normal blood tests | ScienceDaily

  https://www.sciencedaily.com/releases/2016/10/161012132038.htm

  About 15 percent of the 10-12 million people in the U.S. with hypothyroidism, or an underactive thyroid, continue to feel sick despite following the standard of care recommended by the American Thyroid Association. […] Despite normal TSH tests, these patients still have many nagging symptoms of hypothyroidism. „Patients complain of being depressed, slow and having a foggy mind,” said Rush’s Antonio C. Bianco, MD, PhD, an immediate past president of the American Thyroid Association that is professor of medicine at Rush and an expert on thyroid disorders „They have difficulty losing weight. They complain of feeling sluggish and have less energy. […] „These findings correlate with what patients have been telling us,” Bianco said. „This study documents for the first time, in an unbiased fashion, that patients on levothyroxine feel worse and are much less active than controls, exhibiting objective cardiometabolic abnormalities despite having normal TSH levels.”

• #8 Why do so many patients receiving levothyroxine treatment for hypothyroidism have persistent symptoms?

  https://www.thyroid.org/patient-thyroid-information/ct-for-patients/march-2024/vol-17-issue-3-p-3-4/

  Hypothyroidism, a condition that results in an underactive thyroid, is very common. Overt hypothyroidism occurs when both the TSH level is high and the FT4 levels is low. Subclinical hypothyroidism occurs when the TSH is increased but the FT4 level is normal. Treatment of hypothyroidism is thyroid hormone replacement, usually in the form of levothyroxine. […] Symptoms of hypothyroidism may include being tired, slow, sluggish, gaining weight, cold, dry skin and constipation. None of these symptoms are specific to hypothyroidism. In the vast majority of patients with overt hypothyroidism, symptoms either improve or resolve when thyroid hormone levels are returned to the normal range with thyroid hormone therapy. In patients with subclinical hypothyroidism, results are not as clear. Indeed, in both overt and subclinical hypothyroidism, some patients might still have some symptoms despite thyroid levels being normalized.

• #9 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #10

  https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/symptoms/

  Many symptoms of an underactive thyroid (hypothyroidism) are the same as those of other conditions, so it can easily be confused for something else. […] Symptoms usually develop slowly and you may not realise you have a medical problem for several years. […] Common symptoms include: tiredness, being sensitive to cold, weight gain, constipation, depression, slow movements and thoughts, muscle aches and weakness, muscle cramps, dry and scaly skin, brittle hair and nails, loss of libido (sex drive), pain, numbness and a tingling sensation in the hand and fingers (carpal tunnel syndrome), irregular periods or heavy periods. […] Elderly people with an underactive thyroid may develop memory problems and depression. Children may experience slower growth and development. Teenagers may start puberty earlier than normal.

• #11 Underactive thyroid | NHS inform

  https://www.nhsinform.scot/illnesses-and-conditions/glands/underactive-thyroid/

  An underactive thyroid gland (hypothyroidism) is where your thyroid gland doesnt produce enough hormones. […] Common signs of an underactive thyroid are tiredness, weight gain and feeling depressed. […] Symptoms of an underactive thyroid are often similar to those of other conditions, and they usually develop slowly, so you may not notice them for years. […] You should see your GP and ask to be tested for an underactive thyroid if you have symptoms including: tiredness, weight gain, depression, being sensitive to the cold, dry skin and hair, muscle aches. […] Symptoms usually develop slowly and you may not realise you have a medical problem for several years. […] Common symptoms include: tiredness, being sensitive to cold, weight gain, constipation, depression, slow movements and thoughts, muscle aches and weakness, muscle cramps, dry and scaly skin, brittle hair and nails, loss of libido (sex drive), pain, numbness and a tingling sensation in the hand and fingers (carpal tunnel syndrome), irregular periods or heavy periods.

• #12 Hypothyroidism (Underactive Thyroid): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/12120-hypothyroidism

  Hypothyroidism is when your thyroid gland doesnt make and release enough hormone into your bloodstream. The condition slows down your metabolism, which may make you gain weight unexpectedly or feel tired all the time. […] Hypothyroidism symptoms may include fatigue, hoarseness, weight gain, muscle weakness, numbness, brain fog and depression. Hypothyroidism can cause varying symptoms and may mimic other conditions. […] Hypothyroidism symptoms usually develop slowly over time. In some cases, it can take years. Some possible symptoms include: Brain fog (forgetfulness or difficulty concentrating), Depression and anxiety, Dry, coarse skin and hair, Elevated blood cholesterol levels, Feeling tired (fatigue), Frequent or heavy menstrual periods, Hoarseness, Inability to tolerate cold temperatures, Numbness or tingling in your hands, Physical changes in your face (drooping eyelids, puffiness around your eyes), Soreness or muscle weakness, Unexplained weight gain.

• #13 Hypothyroidism (Underactive Thyroid) – NIDDK

  https://www.niddk.nih.gov/health-information/endocrine-diseases/hypothyroidism

  Hypothyroidism has many symptoms that can vary from person to person. Some common symptoms of hypothyroidism include fatigue, weight gain, trouble tolerating cold, joint and muscle pain, dry skin or dry, thinning hair, heavy or irregular menstrual periods or fertility problems, slowed heart rate, and depression. […] Because hypothyroidism develops slowly, you may not notice symptoms of the disease for months or even years. […] Many of these symptoms, especially fatigue and weight gain, are common and do not necessarily mean you have a thyroid problem.

• #14 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Fatigue is a common symptom of hypothyroidism. Many people with the condition report feeling so exhausted that they are unable to go about their day as usual. […] Weight gain is another symptom of hypothyroidism. People with low levels of thyroid hormones can experience weight gain and an increase in body mass index (BMI). […] Hypothyroidism can affect a person’s muscles and joints in numerous ways, causing aches, pains, stiffness, swelling of the joints, tenderness, and weakness. […] It is common for individuals with untreated hypothyroidism to experience anxiety, depression, apathy, impaired memory function, less attentiveness and concentration, low moods, and slower thinking and speech. […] Hypothyroidism can slow down metabolism, leading to a drop in core body temperature. As such, some people with low levels of thyroid hormones may feel cold all the time or have a low tolerance to the cold.

• #15 The lowdown on thyroid slowdown – Harvard Health

  https://www.health.harvard.edu/newsletter_article/the-lowdown-on-thyroid-slowdown

  Hypothyroidism can cause a host of health problems. Fortunately, an underactive thyroid can be easily diagnosed and treated. […] Low thyroid hormone production, or hypothyroidism, causes a range of symptoms, such as fatigue, constipation, dry skin and brittle nails, aches and pains, and feeling down. […] Hypothyroidism symptoms can differ from person to person. In some women, the onset is so gradual that it’s hardly noticeable; in others, hypothyroidism symptoms come on abruptly over the course of a few weeks or months. An underactive thyroid is mild in some women and severe in others. In general, the lower thyroid hormone levels are, the more pronounced and severe the symptoms. […] Characteristic signs of hypothyroidism include: Fatigue. Low thyroid function can result in less energy. Cold intolerance. Slowed-down cells burn less energy, so the body produces less heat. You may feel chilly even when others around you are comfortable. Appetite loss, weight gain. With lower energy needs, you require fewer calories, so your appetite declines. Yet, you may gain a few pounds because your body converts fewer calories into energy, leaving more to be stored as fat. Cardiovascular effects. Low levels of thyroid hormone can lead to high blood pressure and elevated levels of total and LDL cholesterol. The heart’s pumping ability may slow, reducing blood flow to the skin, kidneys, brain, and other vital tissues, and increasing the risk of heart failure, especially in older women. Mental effects. Hypothyroidism and depression share many of the same symptoms, including difficulty in concentrating, memory problems, and loss of interest in things that are normally important to you. They call for different treatments, so proper diagnosis is important. Other signs and symptoms. Slowed metabolism reduces sweating, the skin’s natural moisturizer, so the skin may become dry and flaky and nails brittle. Hair may thin or become coarse. Digestive processes slow, causing constipation. Speech and movement may also slow down. In younger women, periods may become heavier and more frequent, or they may stop; infertility is sometimes a problem. Muscle aches and pain around the joints, including carpal tunnel syndrome, are common. Older women may have balance problems. […] Hypothyroidism can be diagnosed with a blood test and treated with a pill.

• #16 Hypothyroidism (Underactive Thyroid): Symptoms, Causes, Treatment

  https://www.healthline.com/health/hypothyroidism/symptoms-treatments-more

  For most people, symptoms of the condition progress gradually over many years. […] If hypothyroidism isnt treated, you may develop additional symptoms: puffy, sensitive face, hoarseness, anemia, loss of hearing. […] If you have hypothyroidism, youll probably need to take thyroid medications for the rest of your life. Still, its likely that medication will help relieve or resolve your symptoms. […] Hypothyroidism may cause a range of mental health difficulties. […] When levels of thyroid hormones are low, your bodys natural functions lag. This can cause a variety of symptoms, including fatigue, weight gain, and even depression. […] If your thyroid gland doesnt function properly, your basal metabolic rate a measurement of the amount of energy your body uses at rest may be low. As a result, an underactive thyroid may lead to some weight gain. […] Once youre treated for hypothyroidism, you may lose any weight you gained from low hormone levels.

• #17 Hypothyroidism Symptoms Checklist: Spot An Under-active Thyroid

  https://www.letsgetchecked.com/articles/hypothyroidism-symptoms-checklist-underactive-thyroid/?srsltid=AfmBOopBxT0Tsv92JH7ENRf58QRM_qQlwj1PGx0X5YapW-9N4jhVTdiQ

  The thyroid, the small butterfly-shaped gland located just at the front of your neck, plays a major role in metabolism, growth, and development. Thats why, if it is unable to produce enough of the thyroid hormone, which is the case in hypothyroidism, you are likely to experience a whole range of symptoms that affect your overall health. […] Hypothyroidism, also called underactive thyroid, occurs when the thyroid gland doesnt produce enough thyroid hormone. In its early stages, it may not cause many noticeable signs, however as your metabolism continues to slow down, you may start to notice more obvious symptoms. These might include: […] Fatigue and feeling weak or drained are common in those who have an underactive thyroid. […] Hypothyroidism may lead to weight gain as the metabolism slows down.

• #18 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Digestion is another body function that can slow down due to hypothyroidism. These digestive changes cause some people to experience constipation. […] Low hormone levels mean that the liver struggles to carry out its function, and blood cholesterol levels can increase. […] People with hypothyroidism may also have a slower heart rate, or bradycardia. […] Untreated hormone disorders, including thyroid problems, can contribute to hair loss. […] An underactive thyroid affects the skin in various ways and can cause symptoms, such as dry, coarse skin, paleness, and thin, scaly skin. […] A goiter is an enlargement of the thyroid gland that appears as a swelling at the base of the neck. […] People with an underactive thyroid may experience heavy or irregular menstrual periods or spotting between periods.

• #19 Hypothyroidism Symptoms Checklist: Spot An Under-active Thyroid

  https://www.letsgetchecked.com/articles/hypothyroidism-symptoms-checklist-underactive-thyroid/?srsltid=AfmBOopBxT0Tsv92JH7ENRf58QRM_qQlwj1PGx0X5YapW-9N4jhVTdiQ

  An underactive thyroid may increase a person’s sensitivity to the cold while an overactive thyroid may cause an individual to feel too hot. […] Hair loss can occur in instances of an under or overactive thyroid. […] Hypothyroidism may cause constipation due to the slow-down in metabolic processes. […] Hypothyroidism can cause bloating and this is due to water retention. […] Hypothyroidism may be characterized by dry skin due to the slowdown in skin cell turnover. […] Hypothyroidism may lead to mood changes such as depression and/or anxiety. An underactive thyroid is more likely to lead to feeling low in mood. […] If you suspect that you are living with hypothyroidism, you should consider getting screened to avoid thyroid damage, as well as the development of day-to-day symptoms becoming increasingly unpleasant.

• #20 Hypothyroidism (Underactive Thyroid): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/12120-hypothyroidism

  Hypothyroidism is when your thyroid gland doesnt make and release enough hormone into your bloodstream. The condition slows down your metabolism, which may make you gain weight unexpectedly or feel tired all the time. […] Hypothyroidism symptoms may include fatigue, hoarseness, weight gain, muscle weakness, numbness, brain fog and depression. Hypothyroidism can cause varying symptoms and may mimic other conditions. […] Hypothyroidism symptoms usually develop slowly over time. In some cases, it can take years. Some possible symptoms include: Brain fog (forgetfulness or difficulty concentrating), Depression and anxiety, Dry, coarse skin and hair, Elevated blood cholesterol levels, Feeling tired (fatigue), Frequent or heavy menstrual periods, Hoarseness, Inability to tolerate cold temperatures, Numbness or tingling in your hands, Physical changes in your face (drooping eyelids, puffiness around your eyes), Soreness or muscle weakness, Unexplained weight gain.

• #21 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Digestion is another body function that can slow down due to hypothyroidism. These digestive changes cause some people to experience constipation. […] Low hormone levels mean that the liver struggles to carry out its function, and blood cholesterol levels can increase. […] People with hypothyroidism may also have a slower heart rate, or bradycardia. […] Untreated hormone disorders, including thyroid problems, can contribute to hair loss. […] An underactive thyroid affects the skin in various ways and can cause symptoms, such as dry, coarse skin, paleness, and thin, scaly skin. […] A goiter is an enlargement of the thyroid gland that appears as a swelling at the base of the neck. […] People with an underactive thyroid may experience heavy or irregular menstrual periods or spotting between periods.

• #22 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #23 Patient education: Hypothyroidism (underactive thyroid) (Beyond the Basics) – UpToDate

  https://www.uptodate.com/contents/hypothyroidism-underactive-thyroid-beyond-the-basics

  Eyes — Hypothyroidism can lead to mild facial swelling. […] Cardiovascular system — Hypothyroidism slows the heart rate and weakens the heart’s contractions, decreasing its overall function. Related symptoms may include fatigue and shortness of breath with exercise. […] Respiratory system — Hypothyroidism weakens the respiratory muscles and decreases lung function. Symptoms can include fatigue, shortness of breath with exercise, and decreased ability to exercise. […] Gastrointestinal system — Hypothyroidism slows the actions of the digestive tract, causing constipation. Rarely, the digestive tract may stop moving entirely. […] Reproductive system — Women with hypothyroidism often have menstrual cycle irregularities; this commonly involves heavy periods, but some people have absent or infrequent periods.

• #24 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #25

  https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/symptoms/

  If an underactive thyroid is not treated, it’s unlikely that you’d have many of the later symptoms of an underactive thyroid, because the condition is often identified before more serious symptoms appear. […] Later symptoms of an underactive thyroid include: a low-pitched and hoarse voice, a puffy-looking face, thinned or partly missing eyebrows, a slow heart rate, hearing loss, anaemia.

• #26 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #27 Become a member

  https://www.btf-thyroid.org/hypothyroidism-leaflet

  Hypothyroidism is the name given to the condition resulting from an underactive thyroid gland. This means that the thyroid is not producing enough thyroid hormone for the body’s needs. […] The symptoms begin so gradually that you and your doctor might not notice them until the condition is well advanced. Low levels of thyroid hormone result in a slowing down of the mental and physical processes of the whole body. Once treatment has started these symptoms will improve over time, but if not, you should talk to your doctor. These are the most common symptoms: fatigue and tiredness, increased awareness of the cold, dry and coarse skin, dry and thinning hair, hoarse or croaky voice, constipation, muscle weakness, cramps and aches, pins and needles in the fingers and hands (carpal tunnel syndrome), heavier and longer periods, fertility problems, low libido, weight gain, puffy face and bags under the eyes, slow speech, movements, and thoughts, low mood or depression, memory problems, difficulty in concentration, slow heartbeat, slightly raised blood pressure, raised cholesterol, slowed growth (in children).

• #28 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Fatigue is a common symptom of hypothyroidism. Many people with the condition report feeling so exhausted that they are unable to go about their day as usual. […] Weight gain is another symptom of hypothyroidism. People with low levels of thyroid hormones can experience weight gain and an increase in body mass index (BMI). […] Hypothyroidism can affect a person’s muscles and joints in numerous ways, causing aches, pains, stiffness, swelling of the joints, tenderness, and weakness. […] It is common for individuals with untreated hypothyroidism to experience anxiety, depression, apathy, impaired memory function, less attentiveness and concentration, low moods, and slower thinking and speech. […] Hypothyroidism can slow down metabolism, leading to a drop in core body temperature. As such, some people with low levels of thyroid hormones may feel cold all the time or have a low tolerance to the cold.

• #29 Hypothyroidism (Underactive Thyroid): Symptoms, Causes, Tests, Treatments

  https://www.webmd.com/women/hypothyroidism-underactive-thyroid-symptoms-causes-treatments

  Symptoms of hypothyroidism may be vague and can often mimic other conditions. They may include: Changes in the menstrual cycle, Constipation, Depression, Dry hair and hair loss, Dry skin, Fatigue, Greater sensitivity to cold, Hoarse voice, Joint pain, stiffness, and swelling, Problems with memory, Muscle aches and stiffness, Muscle weakness, Puffy face, Slow heart rate, Swelling of the thyroid gland (goiter), Unexplained weight gain or difficulty losing weight. […] Children and teens with hypothyroidism may also have the same symptoms as adults, along with: Delays in puberty, Delays in growth, Slow mental development, Slower development of permanent teeth. […] Babies with hypothyroidism may have no symptoms. If symptoms do occur, they can include: Constipation, Hoarse cry, Little or no growth, Low muscle tone, Jaundice (yellowing of the skin and whites of the eyes), Poor feeding habits, Puffy face, Stomach bloating, Swollen tongue, Umbilical hernia (a bulge near the navel).

• #30 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Fatigue is a common symptom of hypothyroidism. Many people with the condition report feeling so exhausted that they are unable to go about their day as usual. […] Weight gain is another symptom of hypothyroidism. People with low levels of thyroid hormones can experience weight gain and an increase in body mass index (BMI). […] Hypothyroidism can affect a person’s muscles and joints in numerous ways, causing aches, pains, stiffness, swelling of the joints, tenderness, and weakness. […] It is common for individuals with untreated hypothyroidism to experience anxiety, depression, apathy, impaired memory function, less attentiveness and concentration, low moods, and slower thinking and speech. […] Hypothyroidism can slow down metabolism, leading to a drop in core body temperature. As such, some people with low levels of thyroid hormones may feel cold all the time or have a low tolerance to the cold.

• #31 Hypothyroidism | Endocrinology and Diabetes

  https://health.ucdavis.edu/conditions/hypothyroidism

  Hypothyroidism is an underactive thyroid gland. The thyroid is a butterfly-shaped gland in your neck. It makes and releases hormones that your body needs for many important functions. […] With hypothyroidism, the thyroid does not create enough of a hormone called thyroxine (T4). Bodily functions such as your breathing, heart rate and metabolism can slow down. In most cases, hypothyroidism is a lifelong condition. […] Low thyroid hormone levels can cause a range of symptoms. People with hypothyroidism tend to have mild symptoms that may not obviously point to an underactive thyroid. […] Talk with your provider if you experience any symptoms of hypothyroidism, such as: Changes in your menstrual cycle, Constipation, Extreme tiredness, Feeling cold all the time or sensitivity to cold, Hair loss, Hoarse voice, Lack of sweat, Muscle cramps, Swelling or puffiness in your face, Trouble sleeping, Unexplained weight gain.

• #32 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #33 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Digestion is another body function that can slow down due to hypothyroidism. These digestive changes cause some people to experience constipation. […] Low hormone levels mean that the liver struggles to carry out its function, and blood cholesterol levels can increase. […] People with hypothyroidism may also have a slower heart rate, or bradycardia. […] Untreated hormone disorders, including thyroid problems, can contribute to hair loss. […] An underactive thyroid affects the skin in various ways and can cause symptoms, such as dry, coarse skin, paleness, and thin, scaly skin. […] A goiter is an enlargement of the thyroid gland that appears as a swelling at the base of the neck. […] People with an underactive thyroid may experience heavy or irregular menstrual periods or spotting between periods.

• #34 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #35 Become a member

  https://www.btf-thyroid.org/psychological-symptoms-and-thyroid-disorders

  People with thyroid disorders often have emotional or mental health symptoms as well as physical symptoms. This is especially the case for people with hypothyroidism (an underactive thyroid) […] Cognitive or processing problems that can occur, most often with thyroid underactivity, include: Difficulties with concentration (brain fog), Short-term memory lapses, Lack of interest and mental alertness. […] Sometimes it can take a while for thyroid medication to become properly balanced, especially with hypothyroidism and following thyroid surgery. Coping with symptoms while medication is adjusted (particularly fatigue and lack of energy) may impact on your mental wellbeing. […] The outlook for all types of most thyroid disorders is good, and even if your psychological symptoms take a long time to settle initially, most people find they make a full recovery and lead normal lives once their thyroid condition is treated. […] Your emotional and mental health problems should improve as your thyroid condition stabilises, and the long-term prospect is good.

• #36 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #37 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Fatigue is a common symptom of hypothyroidism. Many people with the condition report feeling so exhausted that they are unable to go about their day as usual. […] Weight gain is another symptom of hypothyroidism. People with low levels of thyroid hormones can experience weight gain and an increase in body mass index (BMI). […] Hypothyroidism can affect a person’s muscles and joints in numerous ways, causing aches, pains, stiffness, swelling of the joints, tenderness, and weakness. […] It is common for individuals with untreated hypothyroidism to experience anxiety, depression, apathy, impaired memory function, less attentiveness and concentration, low moods, and slower thinking and speech. […] Hypothyroidism can slow down metabolism, leading to a drop in core body temperature. As such, some people with low levels of thyroid hormones may feel cold all the time or have a low tolerance to the cold.

• #38 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Hypothyroidism happens when the thyroid gland doesn’t make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages. Over time, hypothyroidism that isn’t treated can lead to other health problems, such as high cholesterol and heart problems. […] The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. […] At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older. But as your metabolism continues to slow, you may develop more-obvious problems. […] Hypothyroidism symptoms may include: Tiredness. More sensitivity to cold. Constipation. Dry skin. Weight gain. Puffy face. Hoarse voice. Coarse hair and skin. Muscle weakness. Muscle aches, tenderness and stiffness. Menstrual cycles that are heavier than usual or irregular. Thinning hair. Slowed heart rate, also called bradycardia. Depression. Memory problems.

• #39 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Digestion is another body function that can slow down due to hypothyroidism. These digestive changes cause some people to experience constipation. […] Low hormone levels mean that the liver struggles to carry out its function, and blood cholesterol levels can increase. […] People with hypothyroidism may also have a slower heart rate, or bradycardia. […] Untreated hormone disorders, including thyroid problems, can contribute to hair loss. […] An underactive thyroid affects the skin in various ways and can cause symptoms, such as dry, coarse skin, paleness, and thin, scaly skin. […] A goiter is an enlargement of the thyroid gland that appears as a swelling at the base of the neck. […] People with an underactive thyroid may experience heavy or irregular menstrual periods or spotting between periods.

• #40 Become a member

  https://www.btf-thyroid.org/hypothyroidism-leaflet

  Hypothyroidism is the name given to the condition resulting from an underactive thyroid gland. This means that the thyroid is not producing enough thyroid hormone for the body’s needs. […] The symptoms begin so gradually that you and your doctor might not notice them until the condition is well advanced. Low levels of thyroid hormone result in a slowing down of the mental and physical processes of the whole body. Once treatment has started these symptoms will improve over time, but if not, you should talk to your doctor. These are the most common symptoms: fatigue and tiredness, increased awareness of the cold, dry and coarse skin, dry and thinning hair, hoarse or croaky voice, constipation, muscle weakness, cramps and aches, pins and needles in the fingers and hands (carpal tunnel syndrome), heavier and longer periods, fertility problems, low libido, weight gain, puffy face and bags under the eyes, slow speech, movements, and thoughts, low mood or depression, memory problems, difficulty in concentration, slow heartbeat, slightly raised blood pressure, raised cholesterol, slowed growth (in children).

• #41 Underactive thyroid | NHS inform

  https://www.nhsinform.scot/illnesses-and-conditions/glands/underactive-thyroid/

  An underactive thyroid gland (hypothyroidism) is where your thyroid gland doesnt produce enough hormones. […] Common signs of an underactive thyroid are tiredness, weight gain and feeling depressed. […] Symptoms of an underactive thyroid are often similar to those of other conditions, and they usually develop slowly, so you may not notice them for years. […] You should see your GP and ask to be tested for an underactive thyroid if you have symptoms including: tiredness, weight gain, depression, being sensitive to the cold, dry skin and hair, muscle aches. […] Symptoms usually develop slowly and you may not realise you have a medical problem for several years. […] Common symptoms include: tiredness, being sensitive to cold, weight gain, constipation, depression, slow movements and thoughts, muscle aches and weakness, muscle cramps, dry and scaly skin, brittle hair and nails, loss of libido (sex drive), pain, numbness and a tingling sensation in the hand and fingers (carpal tunnel syndrome), irregular periods or heavy periods.

• #42 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  When hypothyroidism in infants isn’t treated, even mild cases can lead to severe physical and mental development problems. […] In general, children and teens with hypothyroidism have symptoms similar to those in adults. But they also may have: Poor growth that leads to short stature. Delayed development of permanent teeth. Delayed puberty. Poor mental development. […] Hypothyroidism that isn’t treated can lead to other health problems, including: Goiter. Hypothyroidism may cause the thyroid gland to become larger. This condition is called a goiter. A large goiter may cause problems with swallowing or breathing. Heart problems. Hypothyroidism can lead to a higher risk of heart disease and heart failure. That’s mainly because people with an underactive thyroid tend to develop high levels of low-density lipoprotein (LDL) cholesterol the „bad” cholesterol. Peripheral neuropathy. Hypothyroidism that goes without treatment for a long time can damage the peripheral nerves. These are the nerves that carry information from the brain and spinal cord to the rest of the body. Peripheral neuropathy may cause pain, numbness and tingling in the arms and legs. Infertility. Low levels of thyroid hormone can interfere with ovulation, which can limit fertility.

• #43 Hypothyroidism (Underactive Thyroid): Symptoms, Causes, Tests, Treatments

  https://www.webmd.com/women/hypothyroidism-underactive-thyroid-symptoms-causes-treatments

  Symptoms of hypothyroidism may be vague and can often mimic other conditions. They may include: Changes in the menstrual cycle, Constipation, Depression, Dry hair and hair loss, Dry skin, Fatigue, Greater sensitivity to cold, Hoarse voice, Joint pain, stiffness, and swelling, Problems with memory, Muscle aches and stiffness, Muscle weakness, Puffy face, Slow heart rate, Swelling of the thyroid gland (goiter), Unexplained weight gain or difficulty losing weight. […] Children and teens with hypothyroidism may also have the same symptoms as adults, along with: Delays in puberty, Delays in growth, Slow mental development, Slower development of permanent teeth. […] Babies with hypothyroidism may have no symptoms. If symptoms do occur, they can include: Constipation, Hoarse cry, Little or no growth, Low muscle tone, Jaundice (yellowing of the skin and whites of the eyes), Poor feeding habits, Puffy face, Stomach bloating, Swollen tongue, Umbilical hernia (a bulge near the navel).

• #44 Hypothyroidism (Underactive Thyroid): Symptoms, Causes, Tests, Treatments

  https://www.webmd.com/women/hypothyroidism-underactive-thyroid-symptoms-causes-treatments

  Symptoms of hypothyroidism may be vague and can often mimic other conditions. They may include: Changes in the menstrual cycle, Constipation, Depression, Dry hair and hair loss, Dry skin, Fatigue, Greater sensitivity to cold, Hoarse voice, Joint pain, stiffness, and swelling, Problems with memory, Muscle aches and stiffness, Muscle weakness, Puffy face, Slow heart rate, Swelling of the thyroid gland (goiter), Unexplained weight gain or difficulty losing weight. […] Children and teens with hypothyroidism may also have the same symptoms as adults, along with: Delays in puberty, Delays in growth, Slow mental development, Slower development of permanent teeth. […] Babies with hypothyroidism may have no symptoms. If symptoms do occur, they can include: Constipation, Hoarse cry, Little or no growth, Low muscle tone, Jaundice (yellowing of the skin and whites of the eyes), Poor feeding habits, Puffy face, Stomach bloating, Swollen tongue, Umbilical hernia (a bulge near the navel).

• #45 Congenital Hypothyroidism (for Parents) | Nemours KidsHealth

  https://kidshealth.org/en/parents/congenital-hypothyroidism.html

  Hypothyroidism (or underactive thyroid) is when the thyroid gland doesn’t make enough thyroid hormone. Low thyroid hormones make the body use up energy more slowly, and chemical activity (metabolism) in the cells slows down. […] Early signs of congenital hypothyroidism in a baby include: jaundice (yellow skin or eyes), sleeping longer or more often than usual, constipation, a large soft spot (fontanel) on the head, large, swollen tongue, weak („floppy”) muscle tone, swelling around the eyes, poor or slow growth, cool, pale skin, large belly with the navel sticking out. […] Without treatment, children with congenital hypothyroidism can develop permanent mental disabilities. They also may have a poor appetite and breathing problems.

• #46 Congenital Hypothyroidism (for Parents) | Nemours KidsHealth

  https://kidshealth.org/en/parents/congenital-hypothyroidism.html

  Hypothyroidism (or underactive thyroid) is when the thyroid gland doesn’t make enough thyroid hormone. Low thyroid hormones make the body use up energy more slowly, and chemical activity (metabolism) in the cells slows down. […] Early signs of congenital hypothyroidism in a baby include: jaundice (yellow skin or eyes), sleeping longer or more often than usual, constipation, a large soft spot (fontanel) on the head, large, swollen tongue, weak („floppy”) muscle tone, swelling around the eyes, poor or slow growth, cool, pale skin, large belly with the navel sticking out. […] Without treatment, children with congenital hypothyroidism can develop permanent mental disabilities. They also may have a poor appetite and breathing problems.

• #47 Hypothyroidism in Children | Boston Children’s Hospital

  https://www.childrenshospital.org/conditions/hypothyroidism

  In hypothyroidism, the thyroid gland is underactive and doesn’t produce a normal amount of thyroid hormone. Thyroid hormone is important for many normal body functions, including growth, brain development and function, mood, metabolism, puberty, and reproduction. Hypothyroidism is the most common thyroid disorder in children. […] The symptoms of hypothyroidism in children are different than those in adults. Each child may experience symptoms differently, and some children have no symptoms at all. Symptoms in newborns may include: Jaundice (yellowing of the skin, eyes, and mucous membranes), Hoarse cry, Poor appetite, Umbilical hernia (navel protrudes out), Constipation, Slow growth. […] If hypothyroidism is present at birth (congenital hypothyroidism), it’s especially important that it be diagnosed and treated, because thyroid hormone is essential for normal brain development. Newborns and infants with hypothyroidism who are not treated promptly can have intellectual impairment and developmental problems.

• #48 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  When hypothyroidism in infants isn’t treated, even mild cases can lead to severe physical and mental development problems. […] In general, children and teens with hypothyroidism have symptoms similar to those in adults. But they also may have: Poor growth that leads to short stature. Delayed development of permanent teeth. Delayed puberty. Poor mental development. […] Hypothyroidism that isn’t treated can lead to other health problems, including: Goiter. Hypothyroidism may cause the thyroid gland to become larger. This condition is called a goiter. A large goiter may cause problems with swallowing or breathing. Heart problems. Hypothyroidism can lead to a higher risk of heart disease and heart failure. That’s mainly because people with an underactive thyroid tend to develop high levels of low-density lipoprotein (LDL) cholesterol the „bad” cholesterol. Peripheral neuropathy. Hypothyroidism that goes without treatment for a long time can damage the peripheral nerves. These are the nerves that carry information from the brain and spinal cord to the rest of the body. Peripheral neuropathy may cause pain, numbness and tingling in the arms and legs. Infertility. Low levels of thyroid hormone can interfere with ovulation, which can limit fertility.

• #49 Hypothyroidism (Underactive Thyroid): Symptoms, Causes, Tests, Treatments

  https://www.webmd.com/women/hypothyroidism-underactive-thyroid-symptoms-causes-treatments

  Symptoms of hypothyroidism may be vague and can often mimic other conditions. They may include: Changes in the menstrual cycle, Constipation, Depression, Dry hair and hair loss, Dry skin, Fatigue, Greater sensitivity to cold, Hoarse voice, Joint pain, stiffness, and swelling, Problems with memory, Muscle aches and stiffness, Muscle weakness, Puffy face, Slow heart rate, Swelling of the thyroid gland (goiter), Unexplained weight gain or difficulty losing weight. […] Children and teens with hypothyroidism may also have the same symptoms as adults, along with: Delays in puberty, Delays in growth, Slow mental development, Slower development of permanent teeth. […] Babies with hypothyroidism may have no symptoms. If symptoms do occur, they can include: Constipation, Hoarse cry, Little or no growth, Low muscle tone, Jaundice (yellowing of the skin and whites of the eyes), Poor feeding habits, Puffy face, Stomach bloating, Swollen tongue, Umbilical hernia (a bulge near the navel).

• #50

  https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/symptoms/

  Many symptoms of an underactive thyroid (hypothyroidism) are the same as those of other conditions, so it can easily be confused for something else. […] Symptoms usually develop slowly and you may not realise you have a medical problem for several years. […] Common symptoms include: tiredness, being sensitive to cold, weight gain, constipation, depression, slow movements and thoughts, muscle aches and weakness, muscle cramps, dry and scaly skin, brittle hair and nails, loss of libido (sex drive), pain, numbness and a tingling sensation in the hand and fingers (carpal tunnel syndrome), irregular periods or heavy periods. […] Elderly people with an underactive thyroid may develop memory problems and depression. Children may experience slower growth and development. Teenagers may start puberty earlier than normal.

• #51 Hypothyroidism symptoms and signs in an older person – Harvard Health

  https://www.health.harvard.edu/diseases-and-conditions/hypothyroidism-symptoms-and-signs-in-an-older-person

  Some people over age 60 have few, if any, symptoms of an underactive thyroid gland (hypothyroidism), while others experience the same symptoms younger people do. Still others have hypothyroidism symptoms that are not typical at all, making the diagnosis even more difficult. Any of the following signs and symptoms can indicate hypothyroidism in an older person. […] Unexplained high cholesterol. High cholesterol is sometimes the only evidence of an underactive thyroid in an older person. Because this sign may stand alone, high cholesterol warrants a thyroid evaluation. […] Heart failure. Reduced blood volume, weaker contractions of the heart muscle, and a slower heart rate—all caused by low thyroid hormone levels—can contribute to heart failure, when your heart can’t pump out blood as effectively as it should The ineffective pumping may cause subtle symptoms such as feeling less energetic or just walking more slowly. In more advanced stages, fluid can back up in the lungs and legs causing shortness of breath and leg swelling.

• #52

  https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/symptoms/

  If an underactive thyroid is not treated, it’s unlikely that you’d have many of the later symptoms of an underactive thyroid, because the condition is often identified before more serious symptoms appear. […] Later symptoms of an underactive thyroid include: a low-pitched and hoarse voice, a puffy-looking face, thinned or partly missing eyebrows, a slow heart rate, hearing loss, anaemia.

• #53 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Hypothyroidism develops slowly, and symptoms may go unnoticed for a long time. In the event that hypothyroidism is left untreated, a person may develop late symptoms such as decreased taste and smell, hoarseness, puffy face, hands, and feet, slow speech, thickening of the skin, thinning of eyebrows, low body temperature, and slow heart rate. […] Hypothyroidism (underactive thyroid) is a relatively common condition, affecting almost 5 people out of 100 in the U.S. This condition occurs when the thyroid gland does not produce enough hormones. […] Because thyroid hormones are essential for the normal functioning of many different parts of the body, low levels can cause a wide variety of symptoms. This includes fatigue, weight gain, and memory and mood changes.

• #54

  https://111.wales.nhs.uk/encyclopaedia/t/article/thyroid,underactive/

  Common symptoms include: tiredness, being sensitive to cold, weight gain, constipation, depression, slow movements and thoughts, muscle aches and weakness, muscle cramps, dry and scaly skin, brittle hair and nails, loss of libido (sex drive), pain, numbness and a tingling sensation in the hand and fingers (carpal tunnel syndrome), irregular periods or heavy periods. […] If an underactive thyroid isn’t treated, it can lead to complications, including heart disease, goitre, pregnancy problems and a life-threatening condition called myxoedema coma (although this is very rare). […] It’s unlikely that you’d have many of the later symptoms of an underactive thyroid, because the condition is often identified before more serious symptoms appear. […] Later symptoms of an underactive thyroid include: a low-pitched and hoarse voice, a puffy-looking face, thinned or partly missing eyebrows, a slow heart rate, hearing loss, anaemia.

• #55

  https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/symptoms/

  If an underactive thyroid is not treated, it’s unlikely that you’d have many of the later symptoms of an underactive thyroid, because the condition is often identified before more serious symptoms appear. […] Later symptoms of an underactive thyroid include: a low-pitched and hoarse voice, a puffy-looking face, thinned or partly missing eyebrows, a slow heart rate, hearing loss, anaemia.

• #56

  https://www2.hse.ie/conditions/underactive-thyroid-hypothyroidism/symptoms/

  An underactive thyroid is where your thyroid gland does not produce enough hormones. It is also known as hypothyroidism. […] Common signs of an underactive thyroid are: tiredness, weight gain, feeling depressed. […] Symptoms usually develop over time. You may not realise you have a medical problem for years. […] If an underactive thyroid is not treated, more symptoms can develop. But most people get treatment before serious symptoms appear. […] Later symptoms include: a low-pitched and hoarse voice, a puffy-looking face, thinned or partly missing eyebrows, a slow heart rate, hearing loss, anaemia.

• #57 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  When hypothyroidism in infants isn’t treated, even mild cases can lead to severe physical and mental development problems. […] In general, children and teens with hypothyroidism have symptoms similar to those in adults. But they also may have: Poor growth that leads to short stature. Delayed development of permanent teeth. Delayed puberty. Poor mental development. […] Hypothyroidism that isn’t treated can lead to other health problems, including: Goiter. Hypothyroidism may cause the thyroid gland to become larger. This condition is called a goiter. A large goiter may cause problems with swallowing or breathing. Heart problems. Hypothyroidism can lead to a higher risk of heart disease and heart failure. That’s mainly because people with an underactive thyroid tend to develop high levels of low-density lipoprotein (LDL) cholesterol the „bad” cholesterol. Peripheral neuropathy. Hypothyroidism that goes without treatment for a long time can damage the peripheral nerves. These are the nerves that carry information from the brain and spinal cord to the rest of the body. Peripheral neuropathy may cause pain, numbness and tingling in the arms and legs. Infertility. Low levels of thyroid hormone can interfere with ovulation, which can limit fertility.

• #58 Hypothyroidism (Underactive Thyroid): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/12120-hypothyroidism

  Left untreated over long periods of time, hypothyroidism can become life-threatening. If you develop new symptoms, its important to get an evaluation. […] With treatment, hypothyroidism complications arent very common. But left untreated, an underactive thyroid can lead to other health conditions like: Goiter, Heart issues, Infertility, Miscarriage or birth defects, Peripheral neuropathy, Myxedema coma (a rare complication that can affect multiple organs and is life-threatening). […] People with hypothyroidism have a great outlook if they receive treatment. Left untreated, an underactive thyroid can cause life-threatening complications like myxedema. […] Left untreated, hypothyroidism can cause you to gain weight. Many people lose weight once they start hormone replacement therapy. […] Without treatment, hypothyroidism can become a serious and life-threatening medical condition. […] Fatigue, brain fog, depression and unexplained weight gain are just some of the symptoms of hypothyroidism. It can feel scary if you notice these warning signs creeping into your everyday life. Left untreated, hypothyroidism can be life-threatening.

• #59 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  When hypothyroidism in infants isn’t treated, even mild cases can lead to severe physical and mental development problems. […] In general, children and teens with hypothyroidism have symptoms similar to those in adults. But they also may have: Poor growth that leads to short stature. Delayed development of permanent teeth. Delayed puberty. Poor mental development. […] Hypothyroidism that isn’t treated can lead to other health problems, including: Goiter. Hypothyroidism may cause the thyroid gland to become larger. This condition is called a goiter. A large goiter may cause problems with swallowing or breathing. Heart problems. Hypothyroidism can lead to a higher risk of heart disease and heart failure. That’s mainly because people with an underactive thyroid tend to develop high levels of low-density lipoprotein (LDL) cholesterol the „bad” cholesterol. Peripheral neuropathy. Hypothyroidism that goes without treatment for a long time can damage the peripheral nerves. These are the nerves that carry information from the brain and spinal cord to the rest of the body. Peripheral neuropathy may cause pain, numbness and tingling in the arms and legs. Infertility. Low levels of thyroid hormone can interfere with ovulation, which can limit fertility.

• #60 Symptoms of Hypothyroidism (underactive thyroid)

  https://www.medicalnewstoday.com/articles/324535

  Digestion is another body function that can slow down due to hypothyroidism. These digestive changes cause some people to experience constipation. […] Low hormone levels mean that the liver struggles to carry out its function, and blood cholesterol levels can increase. […] People with hypothyroidism may also have a slower heart rate, or bradycardia. […] Untreated hormone disorders, including thyroid problems, can contribute to hair loss. […] An underactive thyroid affects the skin in various ways and can cause symptoms, such as dry, coarse skin, paleness, and thin, scaly skin. […] A goiter is an enlargement of the thyroid gland that appears as a swelling at the base of the neck. […] People with an underactive thyroid may experience heavy or irregular menstrual periods or spotting between periods.

• #61 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  When hypothyroidism in infants isn’t treated, even mild cases can lead to severe physical and mental development problems. […] In general, children and teens with hypothyroidism have symptoms similar to those in adults. But they also may have: Poor growth that leads to short stature. Delayed development of permanent teeth. Delayed puberty. Poor mental development. […] Hypothyroidism that isn’t treated can lead to other health problems, including: Goiter. Hypothyroidism may cause the thyroid gland to become larger. This condition is called a goiter. A large goiter may cause problems with swallowing or breathing. Heart problems. Hypothyroidism can lead to a higher risk of heart disease and heart failure. That’s mainly because people with an underactive thyroid tend to develop high levels of low-density lipoprotein (LDL) cholesterol the „bad” cholesterol. Peripheral neuropathy. Hypothyroidism that goes without treatment for a long time can damage the peripheral nerves. These are the nerves that carry information from the brain and spinal cord to the rest of the body. Peripheral neuropathy may cause pain, numbness and tingling in the arms and legs. Infertility. Low levels of thyroid hormone can interfere with ovulation, which can limit fertility.

• #62 Hashimoto’s Disease – NIDDK

  https://www.niddk.nih.gov/health-information/endocrine-diseases/hashimotos-disease

  Hashimotos disease is an autoimmune disorder that can cause hypothyroidism, or underactive thyroid. […] Many people with Hashimotos disease develop hypothyroidism. Untreated, hypothyroidism can lead to several health problems, including high cholesterol, heart disease and heart failure, high blood pressure, and myxedema, a rare condition in which the body’s functions slow down to the point that it can threaten your life. […] Many people with Hashimotos disease have no symptoms at first. As the disease progresses, you may have one or more of the symptoms of hypothyroidism. […] Some common symptoms of hypothyroidism include fatigue, weight gain, trouble tolerating cold, joint and muscle pain, constipation, dry skin or dry, thinning hair, heavy or irregular menstrual periods or fertility problems, and slowed heart rate.

• #63 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  When hypothyroidism in infants isn’t treated, even mild cases can lead to severe physical and mental development problems. […] In general, children and teens with hypothyroidism have symptoms similar to those in adults. But they also may have: Poor growth that leads to short stature. Delayed development of permanent teeth. Delayed puberty. Poor mental development. […] Hypothyroidism that isn’t treated can lead to other health problems, including: Goiter. Hypothyroidism may cause the thyroid gland to become larger. This condition is called a goiter. A large goiter may cause problems with swallowing or breathing. Heart problems. Hypothyroidism can lead to a higher risk of heart disease and heart failure. That’s mainly because people with an underactive thyroid tend to develop high levels of low-density lipoprotein (LDL) cholesterol the „bad” cholesterol. Peripheral neuropathy. Hypothyroidism that goes without treatment for a long time can damage the peripheral nerves. These are the nerves that carry information from the brain and spinal cord to the rest of the body. Peripheral neuropathy may cause pain, numbness and tingling in the arms and legs. Infertility. Low levels of thyroid hormone can interfere with ovulation, which can limit fertility.

• #64 Hypothyroidism (Underactive Thyroid): Symptoms, Causes, Tests, Treatments

  https://www.webmd.com/women/hypothyroidism-underactive-thyroid-symptoms-causes-treatments

  Untreated, hypothyroidism may cause complications, such as: Balance problems. Older people are at extra risk for balance problems if their thyroid hormone levels are too low. Goiter. If your thyroid is always trying to produce more hormones, the gland can swell and change the appearance of your neck. You may also have trouble swallowing. Heart problems. Hypothyroidism puts you at a greater risk for heart disease and can raise your levels of LDL or bad cholesterol. Infertility. Too little thyroid hormone may disrupt your production of eggs (ovulation) and make it harder to conceive. Joint pain. Low levels of thyroid hormone can cause you to have aches and pains in your joints and muscles, as well as tendonitis. Mental health issues. Low thyroid hormones can cause memory or concentration lapses, as well as decreased interest in activities you used to enjoy.

• #65 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  When hypothyroidism in infants isn’t treated, even mild cases can lead to severe physical and mental development problems. […] In general, children and teens with hypothyroidism have symptoms similar to those in adults. But they also may have: Poor growth that leads to short stature. Delayed development of permanent teeth. Delayed puberty. Poor mental development. […] Hypothyroidism that isn’t treated can lead to other health problems, including: Goiter. Hypothyroidism may cause the thyroid gland to become larger. This condition is called a goiter. A large goiter may cause problems with swallowing or breathing. Heart problems. Hypothyroidism can lead to a higher risk of heart disease and heart failure. That’s mainly because people with an underactive thyroid tend to develop high levels of low-density lipoprotein (LDL) cholesterol the „bad” cholesterol. Peripheral neuropathy. Hypothyroidism that goes without treatment for a long time can damage the peripheral nerves. These are the nerves that carry information from the brain and spinal cord to the rest of the body. Peripheral neuropathy may cause pain, numbness and tingling in the arms and legs. Infertility. Low levels of thyroid hormone can interfere with ovulation, which can limit fertility.

• #66 Hypothyroidism (underactive thyroid) | healthdirect

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

  If untreated, symptoms can get worse gradually, as your thyroid function gets worse. […] Hypothyroidism can lead to a range of health problems including: high cholesterol, decreased fertility, problems with thinking, depression, heart disease, a severe type of hypothyroidism called myxoedema coma this is very rare. […] Children and teenagers with untreated hypothyroidism can have problems with growth and development. […] If you are pregnant, untreated hypothyroidism increases your risk of miscarriage and other pregnancy complications.

• #67 Hypothyroidism in pregnancy

  https://www.babycenter.com/pregnancy/health-and-safety/hypothyroidism-in-pregnancy_20004472

  If you take medication to help keep your thyroid hormones balanced, there’s a good chance you’ll have a healthy pregnancy without any complications. But without treatment, hypothyroidism may increase the risk for serious problems with your pregnancy, including: Miscarriage, Premature birth, Having a low birth weight baby, Preeclampsia, Placental problems, including placental abruption, Anemia, High blood pressure in pregnancy (gestational hypertension). […] Thyroid hormones also play a critical role in your baby’s brain development during pregnancy, so untreated hypothyroidism increases your child’s risk of learning difficulties and developmental problems. […] If there’s concern about how well your thyroid is working, your provider will check the level of thyroid-stimulating hormone (TSH) in your blood at your first prenatal visit. If your TSH levels are high, it could be a sign that your thyroid isn’t making enough T3 and T4.

• #68 Hypothyroidism (underactive thyroid) – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

  Infants with hypothyroidism present at birth that goes untreated are at risk of serious physical and mental development problems. But if the condition is diagnosed within the first few months of life, the chances of typical development are excellent. […] Myxedema coma. This rare, life-threatening condition can happen when hypothyroidism goes without treatment for a long time. A myxedema coma may be triggered by sedatives, infection or other stress on the body. Its symptoms include intense cold intolerance and drowsiness, followed by an extreme lack of energy and then unconsciousness. Myxedema coma requires emergency medical treatment.

• #69 Hypothyroidism | Hashimoto’s Disease | MedlinePlus

  https://medlineplus.gov/hypothyroidism.html

  Hypothyroidism, or underactive thyroid, happens when your thyroid gland doesn’t make enough thyroid hormones to meet your body’s needs. […] The symptoms of hypothyroidism can vary from person to person and may include: Fatigue, Weight gain, A puffy face, Trouble tolerating cold, Joint and muscle pain, Constipation, Dry skin, Dry, thinning hair, Decreased sweating, Heavy or irregular menstrual periods, Fertility problems in women, Depression, Slowed heart rate, Goiter, an enlarged thyroid that may cause your neck to look swollen. Sometimes it can cause trouble with breathing or swallowing. […] Because hypothyroidism develops slowly, many people don’t notice symptoms of the disease for months or even years. […] Hypothyroidism can contribute to high cholesterol. In rare cases, untreated hypothyroidism can cause myxedema coma. This is a condition in which your body’s functions slow down to the point that it becomes life-threatening. […] During pregnancy, hypothyroidism can cause complications, such as premature birth, high blood pressure in pregnancy, and miscarriage. It can also slow the baby’s growth and development.

• #70 Hypothyroidism (Underactive Thyroid): Symptoms, Causes, Tests, Treatments

  https://www.webmd.com/women/hypothyroidism-underactive-thyroid-symptoms-causes-treatments

  Obesity. Although hypothyroidism may curb your appetite, you can gain weight because your metabolism slows down and you don’t burn enough calories. […] Extremely low levels of thyroid hormone can cause a life-threatening condition called myxedema which is the most severe form of hypothyroidism. A person with myxedema can lose consciousness or go into a coma. The condition can also cause the body temperature to drop very low, which can cause death.

• #71 Hypothyroidism: Signs, Symptoms, and Complications

  https://www.verywellhealth.com/how-to-tell-if-you-are-hypothyroid-3231726

  Skin, hair, and nail changes often occur with hypothyroidism. […] „Brain fog” is another symptom of hypothyroidism. […] Hypothyroidism may also mimic the symptoms of depression. […] For some people with hypothyroidism, their first and perhaps the biggest clue is a history of menstrual and reproductive problems. […] While hypothyroidism doesn’t always have apparent, identifiable symptoms, there are some common signs that you may want to have your thyroid evaluated. These include fatigue, weight gain, skin, hair, and nail problems, „brain fog,” mood problems, and sexual and reproductive difficulties. […] In a person with severe hypothyroidism, a myxedema crisis (also called myxedema coma) may occur. […] One of the characteristic signs is the swelling of the neck caused by the enlargement of the thyroid gland. Other symptoms of hypothyroidism in children include: Cold intolerance, Constipation, Delayed puberty, Fatigue, Hair loss, Menstrual irregularities, Rough, dry skin, Slow growth, Weight gain or slow to gain weight.

• #72 Hypothyroidism: Signs and Symptoms

  https://www.healthline.com/nutrition/hypothyroidism-symptoms

  Hypothyroidism, or low thyroid, can cause a variety of signs and symptoms. This article will help you recognize and understand these effects. […] One of the most common symptoms of hypothyroidism is feeling worn out. […] Unexpected weight gain is another common symptom of hypothyroidism. […] Low levels of thyroid hormone flip the metabolic switch toward catabolism, which is when the body breaks down body tissues like muscle for energy. […] Low thyroid hormone causes hair follicles to stop regenerating, resulting in hair loss. […] Hypothyroidism is linked to depression. […] Many patients with hypothyroidism complain of mental fogginess and trouble concentrating. […] Low thyroid levels put the brakes on your colon. […] Both irregular and heavy menstrual bleeding are linked to hypothyroidism. […] Hypothyroidism, or low thyroid, is a common disorder. It can cause a variety of symptoms, such as fatigue, weight gain and feeling cold. It can also result in problems with your hair, skin, muscles, memory or mood.

• #73 Hypothyroidism (Underactive Thyroid) Symptoms, Diagnosis, and Treatment | Saint John’s Cancer Institute – Santa Monica, CA

  https://www.saintjohnscancer.org/endocrine/conditions/hypothyroidism/

  Hypothyroidism is what happens when your thyroid gland is not producing enough thyroid hormone and your body feels sluggish. […] The most common symptoms of hypothyroidism are: Fatigue / sluggishness (mental and physical), Cold intolerance, Constipation, Hair loss, Weight gain. […] Other symptoms of an underactive thyroid may include: Depression, Abnormal blood pressure, Heart arrhythmias. […] Hypothyroidism during pregnancy needs to be treated and addressed to prevent complications such as: Congestive heart failure, Postpartum hemorrhage, Anemia, Pre-eclampsia in the mother, Low birth weight, Mild to severe congenital defects, Neonatal hypothyroidism in the fetus. […] Hypothyroidism in the postpartum period occurs in 5-10% of women, and is higher in women with other autoimmune disorders, positive thyroid antibodies or a previous history of thyroid dysfunction. Many of these women will initially have hyperthyroidism that will progress to hypothyroidism. Most women will recover normal thyroid function 1-2 years after delivery.

• #74 Borderline Hypothyroidism: Symptoms, Treatment and More

  https://www.health.com/condition/thyroid/treatment-for-borderline-underactive-thyroid

  Subclinical, or „borderline,” hypothyroidism is an early form of hypothyroidism. This condition causes an underactive thyroid, which results in high thyroid-stimulating hormone (TSH) levels. People with borderline hypothyroidism often do not have symptoms. […] An underactive thyroid, meaning it’s not producing enough thyroid hormone, can cause symptoms like: […] Borderline hypothyroidism can be so minor that there are only very mild, non-specific symptoms or none at all. Most cases are asymptomatic, meaning no symptoms. This subclinical form increases a person’s chances of hypothyroidism symptoms later in life. […] Borderline hypothyroidism can progress to overt hypothyroidism, so some healthcare providers say it’s useful to take medication. This is especially true if you also have a risk of heart disease, as even mild hypothyroidism can lead to elevated cholesterol levels. […] About 50% of borderline hypothyroidism have normal TSH levels within one to two years. Nearly 25% of those, in contrast, can progress into hypothyroidism.

• #75 Hypothyroidism (underactive thyroid) – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/diagnosis-treatment/drc-20350289

  The symptoms of hypothyroidism can be different from person to person. And they often look like symptoms of other health problems. […] If the second test shows high TSH but T-4 and T-3 are in the standard range, then the diagnosis is a condition called subclinical hypothyroidism. It usually doesn’t cause any noticeable symptoms. […] Treatment for hypothyroidism usually includes taking the thyroid hormone medicine levothyroxine (Levo-T, Synthroid, others) every day. This medicine is taken by mouth. It returns hormone levels to a healthy range, eliminating symptoms of hypothyroidism. […] You’ll likely start to feel better one or two weeks after you begin treatment. Treatment with levothyroxine likely will be lifelong. […] Too much levothyroxine can cause side effects, such as: Tiredness. Increased appetite. Sleep problems. Shakiness. Pounding of the heart, sometimes called heart palpitations. […] If you are diagnosed with subclinical hypothyroidism, talk about treatment with your health care provider. For a mild rise in TSH, thyroid hormone medicine may not be useful. If your TSH level is higher, but still in the subclinical range, thyroid hormones may improve some symptoms.

• #76 Borderline Hypothyroidism: Symptoms, Treatment and More

  https://www.health.com/condition/thyroid/treatment-for-borderline-underactive-thyroid

  Subclinical, or „borderline,” hypothyroidism is an early form of hypothyroidism. This condition causes an underactive thyroid, which results in high thyroid-stimulating hormone (TSH) levels. People with borderline hypothyroidism often do not have symptoms. […] An underactive thyroid, meaning it’s not producing enough thyroid hormone, can cause symptoms like: […] Borderline hypothyroidism can be so minor that there are only very mild, non-specific symptoms or none at all. Most cases are asymptomatic, meaning no symptoms. This subclinical form increases a person’s chances of hypothyroidism symptoms later in life. […] Borderline hypothyroidism can progress to overt hypothyroidism, so some healthcare providers say it’s useful to take medication. This is especially true if you also have a risk of heart disease, as even mild hypothyroidism can lead to elevated cholesterol levels. […] About 50% of borderline hypothyroidism have normal TSH levels within one to two years. Nearly 25% of those, in contrast, can progress into hypothyroidism.

• #77 Become a member

  https://www.btf-thyroid.org/hypothyroidism-leaflet

  A blood test result showing a slightly raised TSH level with a normal FT4 level indicates that you may have mild thyroid failure, also known as subclinical hypothyroidism and that you may have an increased risk of eventually developing hypothyroidism. You should have a regular thyroid function test and consult your doctor if you notice any symptoms, as you may benefit from treatment.

• #78 Hypothyroidism – Hormones Australia

  https://www.hormones-australia.org.au/endocrine-diseases/hypothyroidism/

  If you have subclinical hypothyroidism and some symptoms, your doctor may decide on a trial of thyroxine for a few months to see if it helps. […] If you have subclinical hypothyroidism and few or no symptoms, you will require follow-up blood tests to ensure that you are not developing clinical hypothyroidism. Depending on the level of TSH and if thyroid antibodies are found, these tests should initially be performed every 6-12 months.

• #79

  https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=hw145667

  Symptoms of hypothyroidism during and after pregnancy include fatigue, weight loss, dizziness, depression, and memory and concentration problems. […] If hypothyroidism is treated within the first month of life, a child will grow and develop normally. Untreated hypothyroidism in infants can cause brain damage, leading to intellectual disability and developmental delays. […] Hypothyroidism can occur in infants and children. If hypothyroidism is treated within the first month of life, a child will grow and develop normally. Untreated hypothyroidism in infants can cause brain damage, leading to intellectual disability and developmental delays. […] If your thyroid gland has been removed during surgery, hypothyroidism will occur within a few weeks. If you have been treated with radioactive iodine therapy, hypothyroidism may develop within a year. In these cases, thyroid function typically doesn’t return.

• #80 Clinical manifestations of hypothyroidism – UpToDate

  https://www.uptodate.com/contents/clinical-manifestations-of-hypothyroidism

  Clinical manifestations of hypothyroidism […] Whether hypothyroidism results from hypothalamic-pituitary disease or primary thyroid disease, symptoms and signs of the disease vary in relation to the magnitude of the thyroid hormone deficiency and the acuteness with which the deficiency develops. Hypothyroidism is less prominent clinically and better tolerated when there is a gradual loss of thyroid function (as in most cases of primary hypothyroidism) than when it develops acutely after thyroidectomy or abrupt withdrawal of exogenous thyroid hormone. […] The typical clinical manifestations of hypothyroidism may be modified by factors such as coexisting nonthyroidal illness. Furthermore, when hypothyroidism is caused by hypothalamic-pituitary disease, the manifestations of associated endocrine deficiencies such as hypogonadism and adrenal insufficiency may mask the manifestations of hypothyroidism. Finally, when hypothyroidism follows treatment of Graves’ hyperthyroidism, some manifestations of Graves’ disease, such as ophthalmopathy and vitiligo, may persist throughout the patient’s life. […] Many of the manifestations of hypothyroidism reflect one of two changes induced by lack of thyroid hormone: A generalized slowing of metabolic processes. This can lead to abnormalities such as fatigue, slow movement and slow speech, cold intolerance, constipation, weight gain (but not class III obesity), delayed relaxation of deep tendon reflexes, and bradycardia.

• #81 Why do so many patients receiving levothyroxine treatment for hypothyroidism have persistent symptoms?

  https://www.thyroid.org/patient-thyroid-information/ct-for-patients/march-2024/vol-17-issue-3-p-3-4/

  During the first, second, and third follow-up encounters, 26.7% (42 of 157), 27.3% (29 of 106), and 28% (16 of 57) of patients experienced persistent or new symptoms of hypothyroidism, despite normalized TSH values. Fatigue remained the most common symptoms, followed by weight gain. […] This study suggests that ~1 in 4 patients with hypothyroidism on levothyroxine still reports symptoms, despite normal TSH levels. Whether these symptoms were due to hypothyroidism or to other disorders is unclear.

• #82 Hypothyroidism symptoms linger despite medication use, normal blood tests | ScienceDaily

  https://www.sciencedaily.com/releases/2016/10/161012132038.htm

  „Your brain turns off,” Bianco said. „Patients are tired, sleepy and might experience feelings of depression. If not treated, might slow down dramatically and slowly go into a sleep state, and eventually into coma.” […] Individuals taking levothyroxine weighed significantly more and moved less, they were also more likely to take antidepressants than those who were in the control group. […] Hypothyroid patients who continue to have symptoms on levothyroxine monotherapy might talk to their physician about trying combination therapy, or a pill that contains both T3 and T4. […] „Doctors should be telling their patients, 'I’m going to normalize your TSH, but you’re going to be at a higher risk for gaining weight, experiencing depression and fatigue. It is also more likely that your cholesterol will go up.'”

• #83 Hypothyroidism symptoms linger despite medication use, normal blood tests | ScienceDaily

  https://www.sciencedaily.com/releases/2016/10/161012132038.htm

  „Your brain turns off,” Bianco said. „Patients are tired, sleepy and might experience feelings of depression. If not treated, might slow down dramatically and slowly go into a sleep state, and eventually into coma.” […] Individuals taking levothyroxine weighed significantly more and moved less, they were also more likely to take antidepressants than those who were in the control group. […] Hypothyroid patients who continue to have symptoms on levothyroxine monotherapy might talk to their physician about trying combination therapy, or a pill that contains both T3 and T4. […] „Doctors should be telling their patients, 'I’m going to normalize your TSH, but you’re going to be at a higher risk for gaining weight, experiencing depression and fatigue. It is also more likely that your cholesterol will go up.'”

• #84 Unresolved Hypothyroidism Symptoms in Treated Patients | Paloma Health

  https://www.palomahealth.com/learn/unresolved-hypothyroidism-symptoms-treated-patients?srsltid=AfmBOoq_B9krnzLIPAdVW8KwZZQKIKKL8uSdtOfpBp3snrGXSGAfOuLF

  Genetic factors are associated with persistent symptoms in some hypothyroid patients who are receiving treatment. […] Some hypothyroid patients have a relative deficiency of triiodothyronine (T3), the active form of thyroid hormone, despite having normal TSH levels. […] Hypothyroidism can cause depression, low mood, or anxiety. […] Most healthy adults need at least seven hours of sleep each night for good health. […] Conditions like Hashimotos disease, an autoimmune condition that causes hypothyroidism as well as other autoimmune diseases can lead to persistent symptoms despite treatment, including fatigue, weight gain, and constipation. […] Too little or too much iodine can worsen hypothyroidism. […] Dehydration can exacerbate hypothyroidism symptoms or cause hypothyroidism-like symptoms to worsen. […] Hormonal imbalances can significantly affect hypothyroidism symptoms.

• #85 Hypothyroidism Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/report/hypothyroidism

  Hypothyroidism, also called underactive thyroid, is a condition in which the thyroid gland does not produce enough hormones. […] Symptoms of hypothyroidism include: Dry skin, Thin, brittle hair and fingernails, Increased sensitivity to cold, Feeling tired, Slow thinking, Constipation, Depression, Muscle and joint pain, Heavier menstrual periods, Hoarse voice, Weight gain or difficulty losing weight, Fertility problems. […] In older patients symptoms can be only fatigue, weakness, memory loss, or chest pain. […] Hypothyroidism occurs when thyroxine (T4) levels drop so low that body processes begin to slow down. […] Hypothyroidism is usually progressive and irreversible. […] In many people, subclinical hypothyroidism eventually progresses to the full-blown disorder. […] Other factors associated with a higher risk of developing clinical overt hypothyroidism include: Being an older woman, Having a goiter, Having high levels of thyroid antibodies, Having immune factors that suggest an autoimmune condition, Having family members who have thyroid disease.

• #86 Hypothyroidism | American Thyroid Association

  https://www.thyroid.org/hypothyroidism/

  Hypothyroidism is an underactive thyroid gland. Hypothyroidism means that the thyroid gland cant make enough thyroid hormone to keep the body running normally. People are hypothyroid if they have too little thyroid hormone in the blood. […] When thyroid hormone levels are too low, the bodys cells cant get enough thyroid hormone and the bodys processes start slowing down. As the body slows, you may notice that you feel colder, you tire more easily, your skin is getting drier, youre becoming forgetful and depressed, and youve started getting constipated. […] There is no cure for hypothyroidism, and most patients have it for life. […] Hypothyroidism may become more or less severe, and your dose of thyroxine may need to change over time. […] But if you take your pills every day and work with your doctor to get and keep your thyroxine dose right, you should be able to keep your hypothyroidism well controlled throughout your life. Your symptoms should disappear and the serious effects of low thyroid hormone should improve. If you keep your hypothyroidism well-controlled, it will not shorten your life span.

• #87

  https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=hw145667

  Symptoms occur slowly over time. At first you might not notice them, or you might mistake them for normal aging. […] Hypothyroidism caused by Hashimoto’s thyroiditis sometimes goes away on its own. More often it causes gradual loss of thyroid function. Symptoms may develop slowly and be mild. But symptoms usually grow worse, and health problems may develop over time. […] If untreated, hypothyroidism may lead to myxedema. This condition causes swelling of tissues, increased fluid around the heart and lungs, slowed muscle reflexes, and a slowed ability to think. […] People with mild (subclinical) hypothyroidism have only slightly abnormal thyroid blood test results and often do not have obvious symptoms or health problems. […] Although rare, hypothyroidism can occur in infants, children, and teens.

• #88 Hashimoto’s Disease – NIDDK

  https://www.niddk.nih.gov/health-information/endocrine-diseases/hashimotos-disease

  Most people with Hashimotos disease develop hypothyroidism. Rarely, early in the course of the disease, thyroid damage may lead to the release of too much thyroid hormone into your blood, causing symptoms of hyperthyroidism. […] Your hypothyroidism can be well-controlled with thyroid hormone medicine, as long as you take the medicine as instructed by your doctor and have regular follow-up blood tests.

• #89

  https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=hw145667

  Symptoms occur slowly over time. At first you might not notice them, or you might mistake them for normal aging. […] Hypothyroidism caused by Hashimoto’s thyroiditis sometimes goes away on its own. More often it causes gradual loss of thyroid function. Symptoms may develop slowly and be mild. But symptoms usually grow worse, and health problems may develop over time. […] If untreated, hypothyroidism may lead to myxedema. This condition causes swelling of tissues, increased fluid around the heart and lungs, slowed muscle reflexes, and a slowed ability to think. […] People with mild (subclinical) hypothyroidism have only slightly abnormal thyroid blood test results and often do not have obvious symptoms or health problems. […] Although rare, hypothyroidism can occur in infants, children, and teens.

• #90 Hypothyroidism Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/report/hypothyroidism

  Hypothyroidism, also called underactive thyroid, is a condition in which the thyroid gland does not produce enough hormones. […] Symptoms of hypothyroidism include: Dry skin, Thin, brittle hair and fingernails, Increased sensitivity to cold, Feeling tired, Slow thinking, Constipation, Depression, Muscle and joint pain, Heavier menstrual periods, Hoarse voice, Weight gain or difficulty losing weight, Fertility problems. […] In older patients symptoms can be only fatigue, weakness, memory loss, or chest pain. […] Hypothyroidism occurs when thyroxine (T4) levels drop so low that body processes begin to slow down. […] Hypothyroidism is usually progressive and irreversible. […] In many people, subclinical hypothyroidism eventually progresses to the full-blown disorder. […] Other factors associated with a higher risk of developing clinical overt hypothyroidism include: Being an older woman, Having a goiter, Having high levels of thyroid antibodies, Having immune factors that suggest an autoimmune condition, Having family members who have thyroid disease.

• #91 Hypothyroidism Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/report/hypothyroidism

  Hypothyroidism, also called underactive thyroid, is a condition in which the thyroid gland does not produce enough hormones. […] Symptoms of hypothyroidism include: Dry skin, Thin, brittle hair and fingernails, Increased sensitivity to cold, Feeling tired, Slow thinking, Constipation, Depression, Muscle and joint pain, Heavier menstrual periods, Hoarse voice, Weight gain or difficulty losing weight, Fertility problems. […] In older patients symptoms can be only fatigue, weakness, memory loss, or chest pain. […] Hypothyroidism occurs when thyroxine (T4) levels drop so low that body processes begin to slow down. […] Hypothyroidism is usually progressive and irreversible. […] In many people, subclinical hypothyroidism eventually progresses to the full-blown disorder. […] Other factors associated with a higher risk of developing clinical overt hypothyroidism include: Being an older woman, Having a goiter, Having high levels of thyroid antibodies, Having immune factors that suggest an autoimmune condition, Having family members who have thyroid disease.

• #92

  https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=hw145667

  Symptoms occur slowly over time. At first you might not notice them, or you might mistake them for normal aging. […] Hypothyroidism caused by Hashimoto’s thyroiditis sometimes goes away on its own. More often it causes gradual loss of thyroid function. Symptoms may develop slowly and be mild. But symptoms usually grow worse, and health problems may develop over time. […] If untreated, hypothyroidism may lead to myxedema. This condition causes swelling of tissues, increased fluid around the heart and lungs, slowed muscle reflexes, and a slowed ability to think. […] People with mild (subclinical) hypothyroidism have only slightly abnormal thyroid blood test results and often do not have obvious symptoms or health problems. […] Although rare, hypothyroidism can occur in infants, children, and teens.

• #93 Hypothyroidism (underactive thyroid) – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hypothyroidism/diagnosis-treatment/drc-20350289

  The symptoms of hypothyroidism can be different from person to person. And they often look like symptoms of other health problems. […] If the second test shows high TSH but T-4 and T-3 are in the standard range, then the diagnosis is a condition called subclinical hypothyroidism. It usually doesn’t cause any noticeable symptoms. […] Treatment for hypothyroidism usually includes taking the thyroid hormone medicine levothyroxine (Levo-T, Synthroid, others) every day. This medicine is taken by mouth. It returns hormone levels to a healthy range, eliminating symptoms of hypothyroidism. […] You’ll likely start to feel better one or two weeks after you begin treatment. Treatment with levothyroxine likely will be lifelong. […] Too much levothyroxine can cause side effects, such as: Tiredness. Increased appetite. Sleep problems. Shakiness. Pounding of the heart, sometimes called heart palpitations. […] If you are diagnosed with subclinical hypothyroidism, talk about treatment with your health care provider. For a mild rise in TSH, thyroid hormone medicine may not be useful. If your TSH level is higher, but still in the subclinical range, thyroid hormones may improve some symptoms.

• #94 Hypothyroidism | American Thyroid Association

  https://www.thyroid.org/hypothyroidism/

  Hypothyroidism is an underactive thyroid gland. Hypothyroidism means that the thyroid gland cant make enough thyroid hormone to keep the body running normally. People are hypothyroid if they have too little thyroid hormone in the blood. […] When thyroid hormone levels are too low, the bodys cells cant get enough thyroid hormone and the bodys processes start slowing down. As the body slows, you may notice that you feel colder, you tire more easily, your skin is getting drier, youre becoming forgetful and depressed, and youve started getting constipated. […] There is no cure for hypothyroidism, and most patients have it for life. […] Hypothyroidism may become more or less severe, and your dose of thyroxine may need to change over time. […] But if you take your pills every day and work with your doctor to get and keep your thyroxine dose right, you should be able to keep your hypothyroidism well controlled throughout your life. Your symptoms should disappear and the serious effects of low thyroid hormone should improve. If you keep your hypothyroidism well-controlled, it will not shorten your life span.

• #95

  https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=hw145667

  Symptoms of hypothyroidism during and after pregnancy include fatigue, weight loss, dizziness, depression, and memory and concentration problems. […] If hypothyroidism is treated within the first month of life, a child will grow and develop normally. Untreated hypothyroidism in infants can cause brain damage, leading to intellectual disability and developmental delays. […] Hypothyroidism can occur in infants and children. If hypothyroidism is treated within the first month of life, a child will grow and develop normally. Untreated hypothyroidism in infants can cause brain damage, leading to intellectual disability and developmental delays. […] If your thyroid gland has been removed during surgery, hypothyroidism will occur within a few weeks. If you have been treated with radioactive iodine therapy, hypothyroidism may develop within a year. In these cases, thyroid function typically doesn’t return.

• #96 HYPOTHYROIDISM (UNDERACTIVE THYROID) – a patient’s guide – Family Doctor

  https://www.familydoctor.co.nz/categories/hormone-and-endocrine-problems/hypothyroidism-underactive-thyroid-a-patients-guide/

  Treatment of hypothyroidism is simple and effective. Thyroid hormone replacement is taken in the form of a small pill (thyroxine or eltroxin). Doses usually range from 0.05mg-0.2mg daily. Gradually increasing doses are given until the thyroid hormone level and TSH levels are normal again. […] Most patients with hypothyroidism lead absolutely normal lives with effective treatment and suffer no long-term problems.

• #97 Hypothyroidism in Children | Boston Children’s Hospital

  https://www.childrenshospital.org/conditions/hypothyroidism

  Children with hypothyroidism need regular monitoring of hormone levels to ensure that they are on the correct dose of medication. The dose of levothyroxine often changes during childhood and adolescence due to growth, changes in metabolism, and changes in the hypothyroidism itself. Other than taking levothyroxine and having routine lab testing, children with hypothyroidism are normal and have no restrictions on everyday life or activities.

• #98 Hypothyroidism – Hormones Australia

  https://www.hormones-australia.org.au/endocrine-diseases/hypothyroidism/

  If you have subclinical hypothyroidism and some symptoms, your doctor may decide on a trial of thyroxine for a few months to see if it helps. […] If you have subclinical hypothyroidism and few or no symptoms, you will require follow-up blood tests to ensure that you are not developing clinical hypothyroidism. Depending on the level of TSH and if thyroid antibodies are found, these tests should initially be performed every 6-12 months.

• #99 HYPOTHYROIDISM (UNDERACTIVE THYROID) – a patient’s guide – Family Doctor

  https://www.familydoctor.co.nz/categories/hormone-and-endocrine-problems/hypothyroidism-underactive-thyroid-a-patients-guide/

  Treatment of hypothyroidism is simple and effective. Thyroid hormone replacement is taken in the form of a small pill (thyroxine or eltroxin). Doses usually range from 0.05mg-0.2mg daily. Gradually increasing doses are given until the thyroid hormone level and TSH levels are normal again. […] Most patients with hypothyroidism lead absolutely normal lives with effective treatment and suffer no long-term problems.

• #100 Become a member

  https://www.btf-thyroid.org/psychological-symptoms-and-thyroid-disorders

  People with thyroid disorders often have emotional or mental health symptoms as well as physical symptoms. This is especially the case for people with hypothyroidism (an underactive thyroid) […] Cognitive or processing problems that can occur, most often with thyroid underactivity, include: Difficulties with concentration (brain fog), Short-term memory lapses, Lack of interest and mental alertness. […] Sometimes it can take a while for thyroid medication to become properly balanced, especially with hypothyroidism and following thyroid surgery. Coping with symptoms while medication is adjusted (particularly fatigue and lack of energy) may impact on your mental wellbeing. […] The outlook for all types of most thyroid disorders is good, and even if your psychological symptoms take a long time to settle initially, most people find they make a full recovery and lead normal lives once their thyroid condition is treated. […] Your emotional and mental health problems should improve as your thyroid condition stabilises, and the long-term prospect is good.

• #101 Hypothyroidism in Children | Boston Children’s Hospital

  https://www.childrenshospital.org/conditions/hypothyroidism

  Children with hypothyroidism need regular monitoring of hormone levels to ensure that they are on the correct dose of medication. The dose of levothyroxine often changes during childhood and adolescence due to growth, changes in metabolism, and changes in the hypothyroidism itself. Other than taking levothyroxine and having routine lab testing, children with hypothyroidism are normal and have no restrictions on everyday life or activities.

• #102 Hypothyroidism in Children | Children’s Hospital of Philadelphia

  https://www.chop.edu/conditions-diseases/hypothyroidism

  Hypothyroidism is a common endocrine disorder in which your childs thyroid gland does not produce enough thyroid hormone. A child with an underactive thyroid may experience fatigue, weight gain, constipation, decreased growth, and a host of other issues. […] Symptoms of hypothyroidism are usually subtle and gradual, and may resemble those of other conditions or medical problems. Many symptoms are non-specific and may be ignored as normal parts of our everyday lives. Because of this, the condition may go undetected for years. […] Symptoms may include: Fatigue and/or exercise intolerance, Slower reaction time (an important issue for drivers), Weight gain, Constipation, Sparse, coarse and dry hair, Coarse, dry and thickened skin, Slow pulse, Cold intolerance, Muscle cramps, Sides of eyebrows thin or fall out, Dull facial expression, Hoarse voice, Slow speech, Droopy eyelids, Puffy and swollen face, Enlarged thyroid, producing a goiter-like growth on the neck, Increased menstrual flow and cramping in girls and young women. […] The majority of children with hypothyroidism who are compliant with their medication can achieve normal growth and development. Thyroid hormone replacement is weight- and age-based, so more frequent checks are needed while your child is still physically growing.

• #103

  https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=hw145667

  Symptoms of hypothyroidism during and after pregnancy include fatigue, weight loss, dizziness, depression, and memory and concentration problems. […] If hypothyroidism is treated within the first month of life, a child will grow and develop normally. Untreated hypothyroidism in infants can cause brain damage, leading to intellectual disability and developmental delays. […] Hypothyroidism can occur in infants and children. If hypothyroidism is treated within the first month of life, a child will grow and develop normally. Untreated hypothyroidism in infants can cause brain damage, leading to intellectual disability and developmental delays. […] If your thyroid gland has been removed during surgery, hypothyroidism will occur within a few weeks. If you have been treated with radioactive iodine therapy, hypothyroidism may develop within a year. In these cases, thyroid function typically doesn’t return.

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