This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
Drug used for absence seizure in <2 years: 
Select and explain. 
A. Phenytoin, B. Carbamazepine, C. Ethosuximide, D. Lamotrigine
C: Ethosuximide
Answer: C: Ethosuximide 
Explanation: Ans. C. EthosuximideEthosuximide is drug which act via T type of calcium channel. It is indicated for absence seizures in children who are less than 2 years. If the child is more than 2 years then we can give valproate. The reason valproate is not given in less than 2 years is due to irreversible liver necrosis caused by the same.