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Reye's syndrome
Learn more about the causes and treatment of Reye's syndrome, a rare but serious condition causing swelling in the liver and brain.
Rotavirus
Learn more about this common childhood condition that causes fever, vomiting, diarrhea and sometimes abdominal pain.
Rubella
Learn more about the symptoms and prevention of this contagious viral infection best known for its distinctive red rash.
Ruptured eardrum (perforated eardrum)
A ruptured eardrum is a hole or tear in your eardrum, the thin tissue that separates your ear canal from your middle ear.
Ruptured spleen
A break in the surface of your spleen, usually from a forceful blow to your abdomen, can cause life-threatening internal bleeding.
Sarcoma
Learn about this cancer that forms in the bones and the connective tissue. Find out about symptoms, diagnosis, treatment and the many types of sarcoma.
Scorpion sting
Scorpion stings are painful but rarely life-threatening. Young children and older adults are most at risk of serious complications.
Seizures
Learn about the different types of seizures and what causes them. Also find out what to do if you see someone having a seizure.
Self-injury/cutting
Deliberately hurting your own body, such as by cutting or burning, is a harmful way to cope with emotional pain, intense anger and frustration.
Shigella infection
Shigella infection is an intestinal infection that causes diarrhea. Learn how to recognize, treat and prevent the spread of this contagious condition.
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