Strychnine poisoning: natural course of a nonfatal case.

A rare case of suicidal strychnine poisoning that resolved naturally without treatment is presented. The patient first complained of chest pain, which was originally thought to be caused by a dissecting aneurysm; however, nystagmus, dysesthesia, spastic paraplesia, and hyperreactivity to stimuli shortly developed. Diagnosis was difficult because the patient did not disclose the drinking of strychnine or the suicidal intent, and no abnormal signs were seen in the various central nervous system examinations. The natural course was observed without treatment because the patient's circulatory and respiratory condition was good. Movement disturbances in the upper extremities disappeared after 2 days, nystagmus in 3 days, and dysesthesia and spastic paraplesia in 4 days. The patient was able to stand on the fourth day and walk on the seventh. He was discharged on day 10 without any detectable ill effects.