Hyperthyroidism

November 30, 2022 - Understand what happens when your thyroid is overactive and learn about treatment for this condition.

Read about the symptoms of an overactive thyroid (hyperthyroidism), which include anxiety, hyperactivity and feeling tired all the time.

lumps (nodules) on the thyroid – this extra thyroid tissue can produce thyroid hormones, causing your levels to be too high

This disorder occurs in about 1% of all Americans and affects women much more often than men. In its mildest form, hyperthyroidism may not cause noticeable symptoms; however, in some patients, excess thyroid hormone and the resulting effects on the body can have significant consequences.

July 28, 2023 - Lab test results in hyperthyroidism usually show high T4 and/or T3 and low TSH. Order imaging tests like thyroid ultrasound or nuclear medicine scans which can help determine why your thyroid is making too much thyroid hormone. ... There is a milder form of hyperthyroidism called “subclinical hyperthyroidism”. In Subclinical hyperthyroidism, the TSH is low but the T4 and T3 are normal. Some people may have symptoms from subclinical hyperthyroidism, but many people will not have any symptoms at all.

This is a rare, but life-threatening condition. It can occur when hyperthyroidism goes untreated or under-treated. Symptoms of a thyroid storm include high fever, fast heart rate, dehydration, confusion/agitation and diarrhea.

1 week ago - When this happens, your symptoms suddenly become worse, usually because of an infection or stress. Thyroid crisis is a medical emergency that causes a high fever, stomach pain, and decreased awareness. It’s treated in a hospital. Your thyroid gland produces hormones that regulate your heart ...

You are at higher risk for hyperthyroidism if you: ... Have pernicious anemia, in which the body cannot make enough healthy red blood cells because it does not have enough vitamin B12 · Have type 1 diabetes or primary adrenal insufficiency, a hormonal disorder · Get too much iodine, from eating large amounts of foods containing iodine or using iodine-containing medicines or supplements · The symptoms of hyperthyroidism can vary from person to person and may include:

March 26, 2025 - Your GP will then test your blood for levels of thyroxine and triiodothyronine. If you have an overactive thyroid, you will have higher than normal levels of both these hormones.

April 2, 2025 - The most obvious of the hyperthyroid symptoms is that the patient will appear nervous and anxious as a general rule, and indeed may be thought to be suffering from anxiety only. Most patients are losing weight in spite of a good appetite, although ...

June 22, 2021 - Hyperthyroidism can begin slowly, ... to have no or subtle symptoms, such as an increased heart rate, heat intolerance, and a tendency to become tired during ordinary activities....

July 5, 2024 - Hyperthyroidism happens when the thyroid gland makes too much thyroid hormone. This condition also is called overactive thyroid. Hyperthyroidism speeds up the body's metabolism. That can cause many symptoms, such as weight loss, hand tremors, and rapid or irregular heartbeat.

August 28, 2024 - Other causes include thyroid nodules, iodine exposure, and high levels of thyroid-stimulating hormone (TSH) from the pituitary gland. Prompt diagnosis and treatment can lead to a good outlook. In some cases, it may also lead to curing the condition. With regular medical care and compliance with their treatment plan, many people with the condition live active, regular lives. In some cases, however, hyperthyroidism can lead to serious, potentially life threatening symptoms and complications.

I was diagnosed with hyperthyroidism two years ago but I have been in remission for at least 10 months. I am noticing High heart rate, gasping for breath, increased sweating, weight loss and not increasing even when I am eating more. My free ‘T4’ level is on higher edge, normal ‘T3’ and ‘TSH’ but I feel some symptoms of hyperthyroid.

December 17, 2025 - People with an overactive thyroid may develop nervousness, irritability, and mood swings. People with an underactive thyroid may have a higher risk of anxiety and depression.

February 8, 2016 - Hyperthyroid Symptom #2: Heart palpitations. When I was dealing with hyperthyroidism I would have a difficult time sleeping due to the palpitations I was experiencing at night. And this is very common, as heart palpitations are another common ...

November 24, 2022 - This can cause various symptoms, including irritability, anxiety, palpitations, and more frequent bowel movements. A family history of autoimmune conditions increases a person’s risk.

August 25, 2025 - The symptoms can develop gradually or appear suddenly. For some people, they're mild and easy to dismiss as stress or anxiety. For others, they can be severe and significantly impact daily life. When your thyroid kicks into high gear, the overactive thyroid symptoms you experience can vary dramatically.

1 month ago - When you don’t have enough of the hormones, you’ll experience symptoms like fatigue and weight gain. Medication can help you manage the condition. Penn Medicine endocrinology, diabetes, and metabolism experts routinely care for people with hypothyroidism. Our experts in endocrinology and thyroid care are highly experienced in diagnosing and treating an underactive thyroid.

February 10, 2025 - Low levels of thyroid-producing hormones, such as triiodothyronine (T3) and thyroxine (T4), can change the way the body processes fat. This can cause high cholesterol and atherosclerosis (clogging of the arteries), which can potentially lead to serious heart-related problems, such as angina and heart attack. Therefore, you should see your GP and ask for a blood test if you repeatedly have symptoms of an underactive thyroid.