<prompt> Well recognised side effects of prolonged Phenytoin use include the following exceptHirsutismLymphadenopathyAtaxiaHypoglycaemia  <response>: K.D Tripathy essentials of medical pharmacology 7th edition . At therapeutic levels :-cause hirsutism, -hypersensitivity reactions are rashes,lymphadenopathy,DLE -Megaloblastic anemia,osteomalacia -It inhibit insulin release and cause hyperglycemia At high level cause ataxia,veigo,diplopia,nystagmus. 