<prompt> Phenytoin causes all except -LymphadenopathyAtaxiaHypercalcemiaHirsutism  <response>: Ans. is c i.e., Hypercalcemia o Phenytoin interferes with calcium metabolism by desensitizing target tissue to vit. D, this causes hypocalcemia not hypercalcemia.Adverse effect of phenytoinAt therapeutic levelAt high plasma levela Hypertrophy of gum -commonest in 20a Cerebellar and vestibular manifestationb Hirsutism, coarsening of facial featureso Ataxiao Vertigoo Diplopiao Nystagmusc Hypocalcemiad Hypersensitivity reactions, these include -o Rasheso DLEo Lymphadenopathyo Neutropeniab Epigastric pain, vomiting, nauseac I.V. Injection causes local vascular injuryd Fall in B.P. and cardiac arrythmiase Hyperglycemia- it inhibits release of insuline Drowsiness mental confusionsf Hydantoin syndrome- fetal g Megaloblastic anemia 