An unknown patient presents with pyrexia, constricted pupils, hypotension, cyanosis and stupor progressing to coma. Poisoning is due to -: (A) Phenobarbitone, (B) Cannabis, (C) Dhatura, (D) Diphenhydramine
Answer is A. Among the given four options, only Phenobarbitone (Barbiturate) can cause constricted pupils.
All the given symptoms can occur in barbiturates (phenobarbitone) poisoning.