We present a unique case of a multifocal non-tropical pyomyositis due to no
n-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 co
ntralateral femoral and gluteal musculature. There was a previous history o
f Staphylococcus aureus pyomyositis and colitis ulcerosa. The patient was t
reated successfully with surgical drainage and parenteral antibiotics.