Postpartum iliopsoas pyomyositis due to community-acquired methicillin-resistant Staphylococcus aureus.

Background: Community-acquired, methicillin-resistant Staphylococcus aureus (MRSA) infections are on the rise among patients without risk factors for resistant microorganisms. A new, serious community-acquired MRSA manifestation, postpartum iliopsoas pyomyositis is described.

Case: A 24-year-old Hispanic female presented with back pain 9 days after a normal vaginal delivery.