This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
Pseudolymphoma can result from long-term use of: 
Select and explain. 
A. Phenytoin, B. Carbamazepine, C. Sodium valproate, D. Phenobarbital
A: Phenytoin
Answer: A: Phenytoin 
Explanation: Answer is option 1, phenytoin Cutaneous pseudolymphomas are benign lymphoproliferative processes mimicking lymphomas clinically and histologically. One of the precipitating factors for pseudolymphoma is drugs like anticonvulsants, antidepressants and angiotensin-conveing enzyme inhibitors. According to existing literature phenytoin-induced cutaneous pseudolymphomas are usually T-cell predominant. Ref: