system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 74-year-old woman presents to the clinic for evaluation of an erythematous and edematous skin rash on her right leg that has progressively worsened over the last 2 weeks. The medical history is significant for hypertension and diabetes mellitus type 2. She takes prescribed lisinopril and metformin. The vital signs include: blood pressure 152/92 mm Hg, heart rate 76/min, respiratory rate 12/min, and temperature 37.8°C (100.1°F). On physical exam, the patient appears alert and oriented. Observation of the lesion reveals a poorly demarcated region of erythema and edema along the anterior aspect of the right tibia. Within the region of erythema is a 2–3 millimeter linear break in the skin that does not reveal any serous or purulent discharge. Tenderness to palpation and warmth is associated with the lesion. There are no vesicles, pustules, papules, or nodules present. Ultrasound of the lower extremity is negative for deep vein thrombosis or skin abscess. The blood cultures are pending. Which of the following is the most likely diagnosis based on history and physical examination?
assistant
Cellulitis