Elementary students
Learning Center
Baby acne
Baby acne — Comprehensive overview covers causes, symptoms, treatment of this newborn complexion problem.
Atrioventricular canal defect
This congenital heart defect involves a hole in the heart. It affects blood flow through the heart valves. Learn the symptoms and how it's treated.
Atrial septal defect (ASD)
This heart problem that is present at birth causes a hole between the heart's upper chambers. It can be treated.
Astigmatism
Imperfect curvature of your eye can cause blurred distance and near vision. Learn about this common and treatable eye condition.
Asthma in children: Creating an asthma action plan
Managing childhood asthma can be complicated. Take control with a written plan.
Asthma diet: Does what you eat make a difference?
Can what you eat affect your asthma? Learn how healthy eating habits may reduce asthma symptoms.
Artificial tears: How to select eye drops for dry eyes
Not all eye drops are the same. Here's what to consider when choosing artificial tears for dry eyes.
Arthritis pain: Do's and don'ts
Arthritis pain — To cope, strike a balance between activity and rest.
Arteriovenous malformation
In this condition, a tangle of blood vessels affects the flow of blood and oxygen. Treatment can help.
Aortic valve disease
Learn more about diseases that affect the valve between the heart's main pumping chamber and the body's main artery.
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