Hyperthyroidism

[Luis Fok]

a condition of the thyroid when it swells and does not act properly, typically you will act very skitsophrenic and yell for random reasons, also your eyes might turn red and swell until they pop out of your head and dangle by threads

[Oralee]

not to be confused with [hypothyroidism]; causes a high [metabolic] rate which results in unexplained [weight loss] or inability to gain weight, inability to focus, and a number of other symptoms.

[Sarah]

Overactivity of the thyroid gland, resulting in a rapid heartbeat and an increased rate of metabolism.

[Vania]

Hyperthyroidism is overactivity of the thyroid gland that leads to high levels of thyroid hormones and speeding up of vital body functions.

Graves disease is the most common cause of hyperthyroidism.
Heart rate and blood pressure may increase, heart rhythms may be abnormal, and people may sweat excessively, feel nervous and anxious, have difficulty sleeping, and lose weight without trying.
Blood tests can confirm the diagnosis.
Usually, methimazole or propylthiouracil can control hyperthyroidism.

(See also Overview of the Thyroid Gland.)
Hyperthyroidism affects about 1% of people in the United States. It can occur at any age but is more common in women during menopause and after childbirth.