Teen health
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Ask for support to achieve your health goals
Making healthy lifestyle changes isn't easy. Challenges will come up. Seeking support can make the difference between reaching your goals — or not.
Ascariasis
Learn more about the causes, treatment and prevention of this roundworm infection.
Arteriovenous malformation
In this condition, a tangle of blood vessels affects the flow of blood and oxygen. Treatment can help.
Aortic valve stenosis
Learn more about the symptoms and treatment of this condition that reduces or blocks blood flow from the heart to the body.
Aortic valve repair and aortic valve replacement
These types of heart valve surgeries are done to treat aortic valve disease, including aortic stenosis and aortic regurgitation.
Aortic valve disease
Learn more about diseases that affect the valve between the heart's main pumping chamber and the body's main artery.
Angelman syndrome
Learn about this genetic disorder that causes developmental delays, problems with speech and other symptoms.
Alzheimer's: Tips to make holidays more enjoyable
Consider these tips to make holidays more pleasant and less stressful.
Allergy skin tests
Considering skin testing for your allergies? Learn about the risks, results and what to expect during testing.
Albinism
In this group of inherited disorders, the body makes little or no melanin, a pigment that determines hair, skin and eye color and vision development.
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