Medical Definition of Acute flaccid myelitis (AFM)

Acute flaccid myelitis (AFM): a condition affecting the nervous system characterized by sudden weakness in one or more limbs with loss of muscle tone and decreased or absent reflexes. Some patients with AFM also have weakness of facial muscles or problems with speech or swallowing. Acute flaccid myelitis is due to damage to nerves in the spinal cord and can result from different causes. Viral infections are one known cause of acute flaccid myelitis, including infections by poliovirus and other non-polio enteroviruses, flaviviruses (such as West Nile virus), and adenoviruses. Autoimmune reactions may also cause acute flaccid myelitis.

Quick GuideSymptoms of Mono: Infectious Mononucleosis Treatment

Symptoms of Mono: Infectious Mononucleosis Treatment

REFERENCE: Centers for Disease Control and Prevention. "Acute Flaccid Myelitis." Updated: Nov 01, 2016.

Subscribe to MedicineNet's General Health Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

Last Editorial Review: 11/3/2016

Health Solutions From Our Sponsors