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.

Vocal cord disorders can affect your voice or your ability to talk. They are often caused by using the voice too much when singing, talking, coughing, or yelling.

Detailed information on the different ways that chemotherapy is used to treat cancer.

Sinusitis is an infection of the lining of the sinuses near the nose. These infections most often happen after a cold or after an allergy flare-up.