Metronidazole extravasation causing digital gangrene.

A 45 years old non-diabetic normotensive male presented with vomiting, watery diarrhoea and fever of acute onset. On examination, he was febrile, toxic and mildly dehydrated. His pulse was llO/min and blood pressure 96/70 mmHg. The abdominal examination revealed no organomegaly, no distension, vague diffuse tenderness on deep palpation and normal bowel sounds. There was no other abnormality detectable on systemic examination. Laboratory investigat'ions revealed normal routine biochemistry, mild neutrophilic leucocytosis and negative stool culture for pathogens. He was put on oral norfloxacin 400 mg twice daily and intravenous normal saline.