Peripheral neuropathy. Loss of deep tendon reflexes & peripheral paraesthesias especially numbness, pain & tingling. Cranial nerve palsy, atrophy, cramps, ataxia, a slapping gait, foot drop & difficulty in walking or inability to walk. Constipation & paralytic ileus, associated w/ abdominal cramps. Urinary tract disturbances, orthostatic hypotension, defective sweating & myoclonic jerks. Depression, agitation, insomnia & hallucination, convulsions & comas. Alopecia. Nausea, vomiting, diarrhea, stomatitis & oral ulceration. Fever & wt loss.