<prompt> Hypsarrhythmia EEG is a characteristic feature of -West syndromeLennox - Gastaut SyndromeBreath holding spellsHerpes simplex encephalitis  <response>: Hypsarrhythmia on EEG: -- Continuous, high-amplitude, arrhythmic, asynchronous delta activities with interspersed independent, multiple spikes. -- Feature of WEST SYNDROME. WEST SYNDROME: -- Triad of: --DOC- ACTH injections -- DOC - for west syndrome in a child with tuberous sclerosis- Vigabatrin 