Learn more about this condition in which the heart's upper chambers beat too quickly, causing a rapid, but usually regular, heart rhythm.
Disease
Heart disease
Learn about symptoms, causes and treatment of cardiovascular disease, a term describing a wide range of conditions that can affect the heart.
Disease
Generalized anxiety disorder
Excessive, ongoing anxiety and worry can interfere with your daily activities and may be a sign of generalized anxiety disorder, but treatment can help.
Disease
Rett syndrome
This rare genetic disorder affects the way the brain develops, causing a progressive inability to use muscles for eye and body movements and language.
Disease
Angiosarcoma
Learn about this rare cancer that begins in the blood vessels and lymph vessels. Treatments include surgery, radiation therapy and chemotherapy.
Disease
Ewing sarcoma
Learn about diagnosis and treatment of this bone and soft tissue cancer, including chemotherapy, radiation, proton beam therapy and limb-saving surgery.
Disease
Cervical cancer
Screening with Pap tests can reduce the risk of this cancer that begins in the cervix. Learn more about symptoms, causes, prevention and treatment.
Disease
Liver cancer
Learn how doctors use surgery, liver transplant, radiation, chemotherapy and other methods to treat hepatocellular carcinoma and other types of liver cancer.
Disease
Allergies
Allergy symptoms can range from mild to severe, even life-threatening. Find out what treatments and prevention tips can help.
Disease
Klinefelter syndrome
In this condition, a genetic male has an extra X sex chromosome. This may affect the growth of testicles and result in low testosterone.
Disease
Thalassemia
Some forms of this inherited blood disorder usually show up before the age of 2. Often, they cause anemia. Worse forms of the disease require regular blood transfusions.
Disease
Mosquito bites
Learn about the many ways to prevent mosquito bites and how to ease the itch if you are bitten.