Detailed information on hematology, the study of blood and its disorders.

Learn how to avoid the spread of infectious disease from pets and from wild animals.

Age-related macular degeneration (AMD) is a disease that affects a person’s central vision. It's the most common cause of severe eyesight loss among people age 50 and older.

Detailed information on mumps, including symptoms, diagnosis, complications, and treatment

Glaucoma is a health problem where the fluid inside the eye slowly builds up and doesn’t drain correctly. This causes an increase in eye pressure that can ultimately damage the optic nerve. Here's what you need to know.

A cataract is a clouding of the lens of the eye. This is an area that is normally clear. Cataracts can cause cloudy or blurry vision.

Detailed information on environmental disease factors, including mold, air pollution, asthma triggers, carbon monoxide poisoning, lead poisoning, radon, multiple chemical sensitivity, electric and magnetic fields, and Gulf war syndrome

Detailed information on environmental disease factors, including mold, air pollution, asthma triggers, carbon monoxide poisoning, lead poisoning, radon, multiple chemical sensitivity, electric and magnetic fields, and Gulf war syndrome