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Disease

Osteosarcoma

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.

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