Toru Shizuma, Sayato Fukui and Kikue Todoroki
A 41-year-old woman with type 2 diabetes mellitus (DM) presented with diabetic ketoacidosis (DKA) and back abscess. Onset of complications was triggered by infection with methicillin-sensitive Staphylococcus aureus and the neglected hyperglycemic state. The patient responded to immediate incision and drainage and antibacterial therapy. Prompt surgical intervention, antibacterial therapy, and rapid restoration of glycemic control are crucial to prevent mortality in DM patients complicated with abscess of skin and soft tissues.