Signs and symptoms of low levels of TSH

Checking a thyroid. Save Iuriisokolov / iStock / Getty Images

The thyroid gland is an organ that produces hormones that regulate important body functions, including metabolism. The thyroid is stimulated to produce their hormones by another hormone thyroid stimulating hormone, or TSH. When levels of thyroid hormone are abnormally high, TSH is typically low. Low TSH can cause a range of symptoms, ranging from general symptoms to specific symptoms of a particular organ.


Fatigue, nervousness, restlessness and weakness are common symptoms of low TSH. Because these symptoms can be felt with a variety of other conditions, may not initially attributed to low TSH. Muscle cramps can also occur, but is attributed to another cause. People with low TSH can be very sensitive to heat and can not tolerate. A warm summer day for most, it can be unbearably hot for them. People with low TSH may also sweat more than others.

Heart and lungs

People with low TSH commonly feel that your heart beats hard. extra heartbeats, and rapid heartbeat may also occur. An abnormal heart rhythm called atrial fibrillation can be when TSH low. Sometimes anomalies related hormones low TSH have such a negative effect on the heart, leading to the development of a disorder of the heart muscle called cardiomyopathy. Heart failure can occur with this condition. breathlessness easily with normal activities is a more common manifestation of low TSH.


The skin may be unusually warm and may even have a reddish hue by increasing blood flow that can occur with low TSH. The skin may become darker and softer than usual. Hair thinning can be observed. itchy bumps may also occur. Shin skin may be affected, appearing high or darker than normal, and may look like a shrunken orange peel.

Digestive system

Most people with low TSH have an increased appetite. But they can still lose weight despite eating more than usual because your metabolism is accelerated. Unlike most younger adults, older people with low TSH may have a decreased appetite rather than an increase. Some people with low TSH have an enlarged thyroid gland, called goiter. If the goiter is large enough, it can cause difficulty swallowing. Have more frequent bowel movements is quite common, but people with low TSH rarely experience abdominal pain and vomiting.

Personality and thinking

Some people with low TSH experience personality changes that run the gamut from depression to lose touch with reality. Confusion, difficulty concentrating and memory problems, including amnesia, can occur. Other possible symptoms include insomnia, anxiety and irritability.

Call the doctor

If you experience any symptoms of low TSH, consult your doctor, especially if symptoms last several weeks or progressively worsen. They may do blood tests to measure levels of thyroid hormones and TSH.