Learn about this rare but serious condition of the adrenal glands that's treated by replacing hormones the body needs.
Disease
Adjustment disorders
These are unhealthy reactions to stress that involve emotions and behavior. The response to stress is much more intense than would usually be expected.
Disease
Adult Still disease
Learn about symptoms, complications and treatment of this inflammatory disorder.
This mental health disorder includes a combination of persistent problems, such as difficulty paying attention, hyperactivity and impulsive behavior.
Disease
Alcohol use disorder
Unhealthy alcohol use ranges from mild to severe, including alcoholism and binge drinking, putting health and safety at risk. Early treatment is important.
Disease
Alpha-1-antitrypsin deficiency
Learn about the symptoms and risk factors of alpha-1-antitrypsin deficiency, a condition passed down in families, that can affect the lungs, liver or both.
Disease
Alzheimer's disease
Understand more about this brain disease that is the most common cause of dementia. Also learn about new tests and medicines.
Disease
Antibiotic associated diarrhea
Learn about why you might get diarrhea while taking antibiotics and how to treat this uncomfortable and sometimes serious condition.
Disease
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.
Disease
Anxiety disorders
Learn the symptoms of this mental health condition, and ways to manage worry and fear that interfere with your daily activities.
Disease
Aortic dissection
This life-threatening condition happens when blood leaks through a tear in the body's main artery, the aorta. Know the symptoms and how it's treated.
Disease
Aortic valve disease
Learn more about diseases that affect the valve between the heart's main pumping chamber and the body's main artery.