Newborn health
Learning Center
Appendicitis
Is it just a bellyache or something more serious? Find out about the symptoms and treatment for inflammation of the appendix.
Aplastic anemia
Your body stops producing enough new blood cells in this rare and serious condition, possibly causing fatigue, higher risk of infections and uncontrolled bleeding.
Aphasia
Some conditions, including stroke or head injury, can seriously affect a person's ability to communicate. Learn about this communication disorder and its care.
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 regurgitation
Learn more about the symptoms and treatment of this condition in which the heart's aortic valve doesn't close tightly.
Aortic valve disease
Learn more about diseases that affect the valve between the heart's main pumping chamber and the body's main artery.
Aortic dissection
This life-threatening condition occurs when blood leaks through a tear in the body's main artery (aorta). Know the symptoms and how it's treated.
Anxiety disorders
Learn the symptoms of this mental health condition, and ways to manage worry and fear that interfere with your daily activities.
Antisocial personality disorder
This includes ignoring right and wrong, lying, treating others harshly, and not caring about hurting others. Charm or wit is used to manipulate others.
Antiphospholipid syndrome
Learn about causes and treatment of this blood disorder that mainly affects women and may cause blood clots and miscarriages.
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