What is alternating hemiplegic migraine?

Updated: Oct 16, 2019
  • Author: Rima M Dafer, MD, MPH, FAHA; Chief Editor: Helmi L Lutsep, MD  more...
  • Print
Answer

Answer

Alternating hemiplegia primarily occurs in childhood (hence the name alternating hemiplegia of childhood [AHC]) and is a chronic progressive disorder, associated with a high prevalence of neurologic deficit. [31] This condition is distinguished from FHM by its infantile onset and by its characteristic associated symptoms. [32]

The onset of the disorder is before age 18 months, [33] and it is characterized by vomiting, headache, alternating hemiplegia, loss of consciousness, paroxysmal ocular palsies, choreoathetosis, autonomic dysfunction, and mental retardation. [34, 35] Single-photon emission computed tomography (SPECT) studies have shown progressive decrease of cerebral perfusion in cases of alternating hemiplegic migraine.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!