Pyomyositis due to non-haemolytic streptococci.

We present a unique case of a multifocal non-tropical pyomyositis due to non-haemolytic streptococci in a 36-y-old woman. The initial infection was in an area of contused muscle in the left anterior thigh and spread to the contralateral femoral and gluteal musculature. There was a previous history of Staphylococcus aureus pyomyositis and colitis ulcerosa. The patient was treated successfully with surgical drainage and parenteral antibiotics.