Infant health
Learning Center
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.
Rubella
Learn more about the symptoms and prevention of this contagious viral infection best known for its distinctive red rash.
Scarlet fever
Learn more about the symptoms, causes, complications and treatment of this strep bacterial infection that causes a red rash, sore throat and high fever.
Testicular torsion
Sudden, severe pain in the scrotum could be testicular torsion. Learn about symptoms and treatment for this health emergency.
Tonsillitis
Learn about the causes and treatment of tonsillitis, a common cause of sore throat in children.
Traumatic brain injury
If a head injury causes a mild traumatic brain injury, long-term problems are rare. But a severe injury can mean significant problems.
Viral gastroenteritis (stomach flu)
This condition, often called stomach flu, is usually harmless, except for infants and people with immunosuppression. Symptoms can usually be managed.
Video: Melanoma — Early stage and advanced melanoma
Melanoma — Video explains early-stage melanoma and advanced melanoma.
Video: How cancer spreads
Watch this video to see how cancer spreads (metastasizes).
Video: Heart and circulatory system
Watch this video to see how a healthy heart works.
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