<prompt> Hypsarrhythmia in a child is due toGrandmal epilepsyPetitmal epilepsyMyoclonic epilepsyReflex epilepsy  <response>: Myoclonic epilepsy may beInfantile spasm or Infantile myoclonus or West syndromeJuvenile myoclonic epilepsyInfantile spasm Infantile myoclonus or West syndrome The onset is usually between 3-8 months of lifeIt is characterized by a triad of -i Salaam spells sudden dropping of the head flexion of armsii Mental retardationiii The hypsarrhythmic pattern of EEG diffuse high voltage slow spike and chaotic activityThe spasm occurs in clusters usually on waking.Prognosis for normal mental development is poor.Treatment of infantile myoclonusACTH and corticosteroids are given for 2-12 weeks, depending upon response.Vigabatrin is the DOC Now. 