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Disease

Absence seizure

This type of seizure produces symptoms such as a vacant stare, lip smacking and eyelid fluttering.
Disease

Acoustic neuroma (vestibular schwannoma)

This noncancerous tumor can sometimes grow on a nerve in the head, causing hearing loss and balance problems.
Disease

Acute coronary syndrome

This is a range of conditions that cause sudden low blood flow to the heart. An example is a heart attack. Know the symptoms, causes and treatment.
Disease

Acute sinusitis

Learn the latest ways to treat and prevent the stuffy nose and head pain that can come with this condition.
Disease

Adult Still disease

Learn about symptoms, complications and treatment of this inflammatory disorder.
Disease

Age spots (liver spots)

Learn more about the harmless dark spots on your skin that tend to appear as you age, especially in areas exposed to the sun. Treatment is available.
Disease

Alpha-gal syndrome

This allergic reaction to meat-based meals most often results from a tick bite.
Disease

Amyotrophic lateral sclerosis (ALS)

This progressive nervous system disease, also known as Lou Gehrig's disease, destroys nerve cells.
Disease

Angelman syndrome

Learn about this genetic disorder that causes developmental delays, problems with speech and other symptoms.
Disease

Ankylosing spondylitis

Ankylosing spondylitis is an inflammatory arthritis that affects the spine, causing stiffness and pain. Learn about symptoms and treatment.
Disease

Antiphospholipid syndrome

Learn about causes and treatment of this blood condition that mainly affects women and may cause blood clots and miscarriages.
Disease

Aortic valve stenosis

This type of heart valve disease reduces or blocks blood flow from the heart to the body. Know the symptoms and how it's treated.
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