Learn about the symptoms and causes of this bone cancer that happens most often in teens and young adults. Find out about treatments, including limb-sparing operations.
Disease
Astigmatism
Imperfect curvature of your eye can cause blurred distance and near vision. Learn about this common and treatable eye condition.
Disease
Concussion
This brain injury can cause headaches, dizziness, trouble concentrating and other symptoms that often improve within days to weeks.
Disease
Sunburn
Learn more about how UV rays harm your skin and what you can do for symptom sunburn relief and how to protect yourself from sun exposure.
Disease
Tetralogy of Fallot
These four heart problems present at birth change how blood flows through the body. Know the symptoms and treatment.
Disease
Patent ductus arteriosus (PDA)
This lasting opening between the heart's two major blood vessels is a type of congenital heart defect. Know the symptoms, causes and treatment.
Disease
Breast cancer
Learn about this common cancer, including information on prevention, symptoms, diagnosis and treatment.
Disease
Fecal incontinence
Learn about this common issue that causes some people to avoid social situations. Treatments are available.
Disease
Dementia
This group of symptoms with many causes affects memory, thinking and social abilities. Some symptoms may be reversible.
Disease
Lewy body dementia
This common dementia is caused by a buildup of proteins in the brain. It affects thinking, memory and movement.
Disease
Reactive arthritis
This joint pain is triggered by an infection in another part of the body — often the intestines, genitals or urinary tract.
Disease
Cancer
Find out the basics about cancer, including symptoms, causes and treatments. Learn steps you can take to prevent cancer.