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Disease

Swimmer's itch

Learn more about the symptoms, treatment and prevention of this itchy rash that usually affects people swimming in freshwater lakes.
Disease

Seborrheic dermatitis

Find out what you can do to treat this flaky skin condition that can cause scaly skin and stubborn, itchy dandruff.
Disease

Smallpox

Learn about the symptoms, causes and vaccine prevention of this contagious, disfiguring and sometimes fatal viral disease.
Disease

Tuberous sclerosis

This uncommon genetic disorder causes tumors that are not cancer. These tumors are unexpected overgrowths of tissue in different parts of the body.
Disease

Cold sore

Learn more about the causes, symptoms, treatment and prevention of this common lip sore caused by the herpes simplex virus type 1 (HSV-1).
Disease

Melanoma

Learn about the symptoms, diagnosis and treatments for the most serious form of skin cancer.
Disease

Mitral valve regurgitation

Learn more about the symptoms and treatment of this most common heart valve condition, which causes blood to leak backward in the heart.
Disease

Mitral valve prolapse

This heart condition, also called Barlow syndrome, affects the valve separating the left heart chambers. Know the symptoms and when it’s treated.
Disease

Infant reflux

Learn more about this condition in which a baby spits up food or liquid. Most babies outgrow this common condition by the age of 18 months.
Disease

Common cold in babies

This viral infection causes a runny and stuffy nose. Find out how to ease symptoms and when to see a healthcare professional.
Disease

Lazy eye (amblyopia)

Abnormal visual development early in life can cause reduced vision in one eye, which often wanders inward or outward.
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.

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