This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Hypsarrythmia in a child is due to- 
Select and explain. 
A. Grandmal epilepsy, B. Petitmal epilepsy, C. Myoclonic epilepsy, D. Reflex epilepsy
C: Myoclonic epilepsy
Answer: C: Myoclonic epilepsy 
Explanation: Ans. is 'c' i.e., Myoclonic epilepsy Myoclonic epilepsy may be ? i) Infantile spasm or Infantile myoclonus or west syndrome ii) Juvenile myoclonic epilepsy Infantile spasm (Infantile myoclonus or west syndrome) o The onset is usually between 3-8 months of life o It is characterized by triad of ? i) Salaam spells (sudden droping of the head & flexion of arms) ii) Mental retardation iii) Hypsarrhythmic pattern of EEG (diffuse high voltage slow spike and chaotic activity) o The spasm occur in clusters usually on waking. o Prognosis for normal mental development is poor. Treatment of infantile myoclonus o ACTH and coicosteroids are given for 2-12 weeks, depending upon resonse. o Vagabatrin is the DOC Now.