A case with prediagnosis of soft tissue infection who finally diagnosed as pyoderma gangrenosum of ulcerative colitis.

Pyoderma gangrenosum is a rare disorder characterized by inflammatory and ulcerative skin lesions. In this case report, we aimed to present our patient who had a prediagnosis of soft tissue infection and skin ulcers, and was eventually diagnosed with ulcerative colitis-associated pyoderma gangrenosum. A 30-year-old female patient was admitted to the emergency department with skin lesions on her kneecap and lower neck. The patient's skin lesions were considered as infective ulcers, and the patient was admitted to the infectious diseases clinic. The patient had received antibiotics of meropenem and teicoplanin in the follow-up. Surgical debridement was performed but after debridement, the wound had progressed.