Main content

    HealthWise KnowledgeBase

    Infantile Spasms (West Syndrome)

    Infantile Spasms (West Syndrome)



    Topic Overview

    Infantile spasms (West syndrome) are muscle spasms that affect a child's head, torso, and limbs. Infantile spasms usually begin before the age of 6 months.

    • Most children with infantile spasms have below-normal intelligence. More than half have severe disabilities.
    • Although an exact cause cannot always be found, infantile spasms may be caused by diseases, injuries, or infections that occurred before or during birth.

    Infantile spasms are treated with adrenocorticotropic hormone (Acthar) or prednisone. They generally do not respond well to medicines used to treat Reference epilepsy Opens New Window. Vigabatrin (Sabril) may also be an effective treatment for infantile spasms especially when they are caused by a disease called tuberous sclerosis.



    This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Reference Terms of Use. Reference How this information was developed to help you make better health decisions.