We Move - Sydenham's Chorea 
Includes factsheet with cause, symptoms, diagnosis, treatment. There is also a discussion forum.
http://www.wemove.org/syd/MedlinePlus Medical Encyclopedia: Sydenham Chorea
Also known as St. Vitus Dance. Includes symptoms, cause, diagnosis, treatment, prognosis, and prevention.
http://www.nlm.nih.gov/medlineplus/ency/article/001358.htm
MDAdvice.com - Sydenham's Chorea
Factsheet with cause, symptoms, diagnosis, and treatment.
http://www.mdadvice.com/library/ped/pedillsymp364.html
NINDS Sydenham Chorea Information
Sydenham Chorea (St. Vitus' Dance) information sheet compiled by NINDS, the National Institute of Neurological Disorders and Stroke.
http://www.ninds.nih.gov/disorders/sydenham/sydenham.htm
