Health Information Library

A condition in which patches of skin on the face darken. It's also called the mask of pregnancy.

A long-lasting pain condition that affects the trigeminal nerve in the face.

Ringing or other noises in one or both ears that may be constant or come and go.

A disorder of the immune system that causes the thyroid gland to make too much thyroid hormone.

This tumor of the pituitary gland isn't cancer, but it can cause vision problems, infertility and other health issues.

A condition in which a child's body begins changing into that of an adult too soon.

Learn causes of this symptom and find out when to call a healthcare professional.

A buildup of mucus in the nose, head and throat.

Pain or irritation of the throat, often caused by an infection such as a cold or flu. Swallowing often makes it feel worse.

A condition in which a finger bends and gets stuck, then snaps straight.

A buildup of fats, cholesterol and other substances in an artery and on the artery walls. Also called plaque.

A common childhood illness that causes painful sores in the mouth and throat.

A condition in which the body has too little vitamin B-12, a nutrient that is needed to make red blood cells and DNA.

A condition in which the body is too low on vitamin D, a nutrient that is important for bones, nerves, muscles and the immune system.

Cancer that occurs in the stomach.

A condition in which one or more of the parathyroid glands in the neck make too much hormone

A rare congenital heart defect, in which the left side of the heart doesn't form fully and is too small.

Irritation and swelling of the inner lining of the heart's chambers and valves. Usually caused by infection.

A break in the bone connecting the breastbone and shoulder. This also is known as a clavicle fracture.

A type of cancer that starts in the brain or spine.