Healthy pregnancy
Learning Center
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.
Arteriovenous malformation
In this condition, a tangle of blood vessels affects the flow of blood and oxygen. Treatment can help.
Arthritis pain: Do's and don'ts
Arthritis pain — To cope, strike a balance between activity and rest.
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.
Ascariasis
Learn more about the causes, treatment and prevention of this roundworm infection.
Aspirin during pregnancy: Is it safe?
A Mayo Clinic specialist explains what you need to know about taking aspirin if you're pregnant.
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.
Asthma in children: Creating an asthma action plan
Managing childhood asthma can be complicated. Take control with a written plan.
Astigmatism
Imperfect curvature of your eye can cause blurred distance and near vision. Learn about this common and treatable eye condition.
Ataxia
Often caused by an underlying condition, this loss of muscle control and coordination can impact movement, speech and swallowing.
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