A 38-year-old man presented with a 3-month history of asymptomatic cutaneous lesions on his face, which had been diagnosed and treated as herpes zoster (HZ), without improvement. He had no… Click to show full abstract
A 38-year-old man presented with a 3-month history of asymptomatic cutaneous lesions on his face, which had been diagnosed and treated as herpes zoster (HZ), without improvement. He had no related symptoms and no personal or family history of similar conditions. Physical examination revealed erythematous macules on the patient’s forehead, arranged in a linear distribution along the right ophthalmic branch of the trigeminal nerve, and a firm yellowish papule surrounded by erythema on his cheek (Fig. 1). Routine laboratory tests, including lipid profile, quantiferon test, C-reactive protein, erythrocyte sedimentation rate, serum thyroid hormone levels, serology for hepatitis B and C and human immunodeficiency virus, and chest radiographs were all normal. Biopsies were taken from both lesions.
               
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