Q. A 54-year-old male presents to the clinic with a 2-day history of sudden onset facial swelling and redness. He mentions a burning sensation on his right cheek and denies any trauma or insect bites. He has no significant past medical history. The patient is afebrile, and vitals are within normal limits. Physical examination reveals a sharply demarcated, raised, erythematous, and warm area on his right cheek. The lesion is tender to touch. There are no vesicles or bullae. No other skin lesions are noted elsewhere on the body. Lymphadenopathy is absent. Based on the clinical presentation, what is the most likely diagnosis?