A 36-year-old man enters the emergency department with lesions that are painful, red, swollen, and indurated.He is febrile and exhibiting regional lymphadenopathy (swollen glands).The lesions are marked and well demarcated with a raised border.Which organism is most likely responsible for causing this infection?

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S.pyogenes can involve infections of the epidermal and dermal layers of the skin.The type of infection described is erysipelas, which gives rise to lesions that are painful, red, swollen, and indurated.Patients are febrile, and regional lymphadenopathy is often present.Lesions are marked and well demarcated with a raised border.

A 36-Year-Old Man Enters the Emergency Department with Lesions That