You may have
hyperthyroidism if you:
- Feel nervous, moody, weak, or
- Have hand tremors, or have a fast or irregular heartbeat, or
have trouble breathing even when you are resting.
- Feel very hot, sweat a lot, or
have warm, red skin that may be itchy.
- Have frequent and sometimes
loose bowel movements.
- Have fine, soft hair that is falling
- Lose weight even though you are eating normally or more than
Also, some women have irregular menstrual cycles or
stop having periods altogether. And some men may develop enlarged
The symptoms of hyperthyroidism are not the same for
everyone. Your symptoms will depend on how much hormone your thyroid gland is
making, how long you have had the condition, and
your age. If you are older, it's easy to mistakenly
dismiss your symptoms as normal signs of aging.
Specific symptoms of Graves' disease
Graves' disease often have additional symptoms,
- Goiter , which is an enlarged, painless thyroid gland.
- Thickened nails that lift off the nail
- Pretibial myxedema, which is lumpy, reddish, thick skin on the front of
the shins and sometimes on top of the feet.
- Clubbing (fingers with wide tips).
- Graves' ophthalmopathy, which causes
bulging, reddened eyes , among other symptoms.
Graves' ophthalmopathy is a possible complication of hyperthyroidism. It can
occur before, after, or at the same time as your symptoms of hyperthyroidism.
People with Graves' ophthalmopathy develop eye problems, including
bulging, reddened eyes, sensitivity to light, and blurring or double vision.
People who smoke are more likely to develop Graves' ophthalmopathy.
If you have Graves' ophthalmopathy, it may temporarily get worse if you
have radioactive iodine treatment. On the other hand, it may get better if you
take antithyroid medicine.
If you do not treat your
hyperthyroidism, you may:
- Lose weight because your body's
metabolism is faster.
- Have heart problems
such as rapid heart rate,
atrial fibrillation, and
- Have trouble replacing
calcium and other minerals in your bones, which can lead to
In rare cases, hyperthyroidism can cause a
life-threatening condition called
thyroid storm, which happens when the thyroid gland
releases large amounts of thyroid hormones in a short period of time.