A weak delicate boy with vacant look aged 5 years was brought in by his mother for his frequent attacks of convulsions. His mother narrates, his complaints started right from his dentition and during the attack he is irritable and screams continuously. When she gives water he greedily swallows it; bites the spoon, but remains unconscious. She also added he is boring his head into pillow, rolling from side to side and beating his head with hands. The child shows a picture of acute idiocy, when questioned answers slowly.
What is your similimum?