Psoriasis presenting as targetoid lesions: First of its kind

Abstract

Psoriasis is a common chronic inflammatory and proliferative condition of the skin and its presentation as targetoid lesions has not been described. A 29-year-old male came to the outpatient department with multiple red color elevated skin lesions over the forehead and trunk for the past 10 days. Multiple targetoid lesions of size 2 cm × 2 cm to 5 cm × 4 cm having central edematous crusted zone and the peripheral zone of erythema with irregular to well-defined margins present almost all over the body. Differential diagnosis included psoriasis, erythema multiforme, pemphigus erythematosus, and reiter's disease. The biopsy confirmed the diagnosis of psoriasis. The patient was started on injection methotrexate and responded well.