Multiple Myeloma /

Multiple myeloma is a cancer that forms in a type of white blood cell called a plasma cell. Healthy plasma cells help you fight infections by making antibodies that recognize and attack germs.

Multiple Sclerosis /

A disease in which the immune system eats away at the protective covering of nerves.

Multiple System Atrophy /

Multiple system atrophy (MSA) is a rare condition of the nervous system that causes gradual damage to nerve cells in the brain.

Muscular Dystrophy /

In muscular dystrophies, abnormal genes (mutations) lead to muscle degeneration. Most forms begin in childhood.

Myopia /

Nearsightedness (myopia) is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry.

Nasal Congestion /

Nasal congestion or "stuffy nose" occurs when nasal and adjacent tissues and blood vessels become swollen with excess fluid, causing a "stuffy" plugged feeling.

Nasal Polyps /

Nasal polyps are soft, noncancerous growths on the lining of your nose or sinuses. They often occur in groups, like grapes on a stem.

Nepheritis /

Acute nephritis occurs when your kidneys suddenly become inflamed. It has several causes, and it can lead to kidney failure if left untreated.

Nephrotic Syndrome /

Nephrotic syndrome is a kidney disorder that causes your body to pass too much protein in your urine.