Persistent Annular Eruptions in a 2‐Year‐Old Girl

A previously healthy 2-year-old girl presented with a 3-month history of worsening rash involving the face, trunk, and extremities.The eruption began as two sharply marginated plaques on the bilateral cheeks that gradually enlarged.A few weeks later, multiple plaques developed across the trunk and limbs.The lesions were firm but asymptomatic and evolved over several days, becoming more dusky-colored with peripheral erythema.Family denied previous vesicles or bullae.There were no mucosal changes or systemic symptoms, including fevers, chills, weight loss, abdominal pain, changes in bowel habits, or arthralgias.On initial examination, she had well-demarcated, indurated, annular, erythematous plaques with small hemorrhagic fissures and serosanguineous crust along the periphery, extending from the nasal bridge across the left cheek (Figure 1).There was a smaller, indurated, annular, erythematous, and scaly plaque on the right lateral cheek.Multiple annular, deepred, indurated plaques with peripheral scale subsequently developed over the chest, abdomen, thighs, and upper extremities (Figure 2).No nail changes or scalp involvement were present.A punch biopsy was performed from a representative lesion on the thigh (Figures 3 and 4). | What Is the Diagnosis?