Tropical pyomyositis.

Tropical pyomyositis, a suppurative condition involving a group or groups of muscles, has only been described in the tropical areas of the world. An etiological factor in the genesis of this disease is closed muscle trauma causing bleeding, hematoma formation, muscle necrosis, and secondary blood borne infection; but this does not explain why the condition occurs or is contracted only in the tropical belt. The commonest organism present in the abscess is Staphylococcus aureus. Neglected or poorly treated tropical pyomyositis can give rise to chronic osteomyelitis or septic arthritis.