Pseudolymphoma can result from long-term use of:
Phenytoin
Carbamazepine
Sodium valproate
Phenobarbital
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:
Central Nervous system