as alternatives for carbamazepine in patients who test positive for HLA-B 1502. Phenytoin has been associated with development of lymphadenopathy . Both Hodgkin's lymphoma and non-Hodgkin's lymphoma have been reported in patients with phenytoin-induced lymphadenopathy. If lymphadenopathy occurs, evaluation of the cause and close follow-up observation are indicated. Phenytoin may exacerbate preexisting