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Graves' disease is an autoimmune disorder that affects the thyroid gland, which produces hormones that control many of the body's

Gout is a form of arthritis caused by a buildup of uric acid crystals in a joint. It causes sudden attacks of pain, swelling

Gonorrhea is a bacterial infection spread through sexual contact (sexually transmitted infection). It's found most often in the

A goiter is an enlarged thyroid gland, which is a butterfly-shaped gland in the front of the neck. A goiter often causes a

Glucagon is a hormone produced by the pancreas that causes the liver to release its stored sugar into the bloodstream. Glucagon is

Glomerulonephritis is a kidney disorder that causes inflammation in the small blood vessels of the kidney (renal capillaries). It

Glaucoma is a group of eye diseases that damage the optic nerve at the back of your eye. This can cause vision loss. Although the

Guillain-Barré syndrome is a rare nerve disorder that occurs when the body's own defenses (immune system) attack part of the

The gallbladder is a small sac under the liver that stores and concentrates bile, a fluid that helps the body digest fats. After a

Genital warts are skin growths on or around the genitals or anus. They are caused by a virus that's spread by sexual contact