Contact a Family: Hypotonia: Site for families with disabled children explains various medical conditions and medical terms. Helps parents network with other parents facing the same challenges.Hypotonia (Muscle Weakness): Describes possible causes of the condition, symptoms, and tests doctors may use to find the underlying cause.MedlinePlus Medical Encyclopedia: Hypotonia: Describes the condition and lists some common causes.National Institute of Neurological Disorders and Stroke (NINDS): Hypotonia Information Page: Hypotonia information sheet. Explains what it is, some of the treatments, and a comment on the prognosis.The Benign Congenital Hypotonia Site: Information and support for people dealing with hypotonia.UK Congenital Hypotonia Website: Parents of children with hypotonia share stories, medical information, and useful links.