Diseases and Conditions

An abdominal aortic aneurysm is when a weak area in the aorta swells up like a balloon. It can cause…

Abnormal uterine bleeding is heavy or unusual bleeding from the uterus (through your vagina) throughout a woman’s monthly cycle.

Abusive head trauma (shaken baby syndrome) is a form of child abuse that can be deadly or leave a baby…

ACL injuries have become more common among athletes, women, and children. PEP training programs can help with prevention.

Acne is a common skin condition that develops when the hair follicles in your skin are blocked by dead skin…

Learn about the symptoms, causes, treatment and prevention of acute bronchitis, a lung infection usually caused by a virus.

Addison’s disease is a condition that affects your body’s adrenal glands. It interferes with your body’s ability to produce certain…

Adhesive capsulitis is known as frozen shoulder. It causes shoulder pain and stiffness, due to surgery, injury, and some medical…

Attention-deficit hyperactivity fisorder (ADHD) is a group of behaviors that affects focus and self-control. Adults can have ADHD.

What is AIDS? AIDS (acquired immune deficiency syndrome) is a life-threatening condition caused by human immunodeficiency virus (HIV). The virus makes your body weak and unable to fight off infections. It does this by attacking your body’s immune system, killing CD4 cells

AIDS is a life-threatening condition caused by HIV. The virus attacks the body's immune system. Learn about AIDS, its treatment,…

Alcohol abuse is a pattern of drinking too much alcohol too often. This can harm your work, school, and…

Allergic conjunctivitis is called “pink eye.” It causes your eye to become irritated, swollen, itchy, sore, and watery.

Allergic rhinitis is a reaction to allergens such as pollen. It causes nasal symptoms that can usually be treated with…

Alopecia areata is an autoimmune disease that causes you to lose small, round patches of hair on your head.

Alzheimer’s disease is a type of dementia. The symptoms are associated with physical and functional changes in the brain.

Amblyopia (lazy eye) develops in childhood when one eye doesn’t work properly with the brain. Left untreated, it can lead…

Amenorrhea is the absence of menstruation or a monthly period. Learn about the various causes and treatments for primary and…

Anal fissures are small tears in the lining of the lower rectum. They are usually caused by straining during a…

An anal fistula is an abnormal connection that forms between the anus and the skin outside of it. It usually…