Your doctor can diagnose hyperthyroidism and hypothyroidism by testing the levels of thyroid hormones in your blood. Doctors measure hormones secreted by the thyroid itself, as well as thyroid-stimulating hormone (TSH), a chemical released by the pituitary gland that triggers hormone production in the thyroid.
When you are hypothyroid, higher quantities of TSH are circulating in your blood as your body attempts to increase production of thyroid hormones. The reverse is true with hyperthyroidism,...
Swelling of the arms, hands, legs, and feet, and facial
puffiness, particularly around the
Muscle aches and cramps.
In general, how bad your symptoms are depends on your age,
how long you have had hypothyroidism, and the seriousness of the condition. The
symptoms may be so mild and happen so slowly that they go unnoticed for years.
The older you are, the more likely you are to notice symptoms.
Because of the variety of symptoms, hypothyroidism can be mistaken for
depression, especially during and after pregnancy. In older people, it may be
dementia, and other conditions that cause memory
Symptoms of hypothyroidism in infants, children, and teens
Although rare, hypothyroidism can occur in
infants, children, and teens. In infants, symptoms of
a goiter include a poor appetite and choking on food. Symptoms of
hypothyroidism may include dry, scaly skin. In children and teens, symptoms
include behavior problems and changes in school performance. Children and teens
may gain weight and yet have a slowed growth rate. Teens may have delayed
puberty and look much younger than their age.