Q. A 36-year-old man comes to the emergency room for a sudden eruption of numerous skin lesions on his face, trunk, and extremities in the last 24 hours. The lesions first started in the face and then rapidly spread to the trunk and extremities. He says that he had a sore throat 3 days back for which he was prescribed amoxicillin and clavulanic acid. His temperature is 101.9°F (38.8°C), pulse is 108/min, blood pressure is 120/80 mmHg, and respirations are 16/min. Physical examination shows numerous pustules over the face, trunk, and extremities. They are of a pinhead size with an erythematous base. The mucous membranes are unaffected. A 4 mm punch biopsy shows spongiform pustules in the subcorneal region. Necrotic keratinocytes are observed. The dermis shows a perivascular and interstitial -NEUTROPHIL cell infiltrate. Blood vessels appear normal without tortuosity or dilatation. His laboratory findings are shown below. What is the most likely diagnosis for this patient based on his clinical features?