Health Information Library

An illness caused by a virus that affects nerves and often can be prevented with a vaccine.

Learn what brain conditions are treated with this surgery that involves removing a piece of the skull. Also find out what you can expect during surgery.

Chronic hardening and tightening of the skin and connective tissues.

A common injury in which forceful twisting causes certain tissue in the knee to tear.

A common children's virus that causes sores in the mouth and a rash on the hands and feet.

A craving for something to drink, often associated with dehydration.

A common, sometimes deadly viral infection of the nose, throat and lungs, also called flu.

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

A narrowing of the body's main artery that's often present at birth.

Flu viruses in other animals, such as birds, may be a risk to people. Learn more about the symptoms, causes, prevention and treatment for bird flu in people.

A type of skin burn resulting from getting too much sun or other type of ultraviolet radiation, such as from sunlamps.

This mental health condition includes a mix of schizophrenia and mood disorder symptoms.

A fast-growing cancer of the body's germ- and disease-fighting system, also called the lymphatic system.

This once common childhood infection most often can be prevented with a vaccine.

This rare condition causes slow-growing tumors on nerves, including on the nerve in the ear that carries sound information to the brain.

A sexually transmitted infection caused by a parasite.

Find out the symptoms of this condition, how it causes a bulge to form in the tube that connects the throat to the stomach and treatments.

Passing larger amounts of urine than usual.

Pain on either side of the lower back that's often due to kidney stones and is usually wavelike and intense and spreads to the stomach area or groin.

Trouble urinating and emptying the bladder all the way.