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Age-related macular degeneration (AMD) is a disease that causes blurring of your central vision. The blurring happens because of

Respiratory syncytial virus infection (RSV) is a lot like a bad cold. It causes the same symptoms. And like a cold, it's very

An ammonia test measures the amount of ammonia in the blood. Most ammonia in the body forms when protein is broken down by

Social anxiety disorder (also called social phobia) is a condition in which a person is extremely anxious about what they will say

Lactose intolerance means that your body can't properly digest lactose. Lactose is a type of natural sugar found in milk and dairy

Looks at surgery for ovarian cysts. Explains why surgery is done and how well it works. Discusses what to expect after surgery

Viral load is a measurement of how much HIV is present in your blood. A sample of blood is taken and sent to a lab for testing

What is Bell's palsy? Bell's palsy is a paralysis or weakness of the muscles on one side of your face. Damage to the facial nerve

What is amyotrophic lateral sclerosis? Amyotrophic lateral sclerosis (ALS) is a gradual wasting away of nerve cells (motor neurons

Aortic valve stenosis is a narrowing of the aortic valve. The aortic valve allows blood to flow from the heart's lower left