58-Year-Old Diabetic Man With a Warm, Erythematous Foot

A 58-year-old man with type 1 diabetes mellitus (hemoglobin A1c level, 6.5% [reference range, 4.0%-5.6%]) complicated by diabetic nephropathy (chronic kidney disease stage 3A), retinopathy, and severe peripheral neuropathy presented to his local urgent care center with a 24-hour history of right dorsal midfoot erythema and mild pain. Two weeks previously, the patient sustained a right foot injury after falling out of bed. The patient had not experienced fevers, chills, night sweats, nausea, vomiting, or malaise but reported somewhat labile blood sugar levels that day with an afternoon glucose measurement of 170 mg/dL (reference range, 70-140 mg/dL).
Source: Mayo Clinic Proceedings - Category: Internal Medicine Authors: Tags: Residents ’ clinic Source Type: research