A 5-year-old girl, with no relevant past history, presented to Pediatrics Dermatology consultation due to a cutaneous rash on her chin for the last 3 months. Corticosteroid and antifungal topical therapy, both separately and combined, as well as oral and topical antibiotics have been previously prescribed. There was transient improvement with corticosteroids, but the rash recurred after treatment was stopped. There was no history of pruritus, pain, contact with animals or similar lesions in the family. Physical examination revealed a mentonian plaque with multiple erythematous papules and pustules, with some showing a very subtle scaling border (Figure 1 and 2).
Figure 1. Mentonian plaque with multiple erythematous papules and pustules, with some showing a very subtle scaling border (anterior view).
Figure 2. Mentonian plaque with multiple erythematous papules and pustules, with some showing a very subtle scaling border (anteroinferior view).
What is the diagnosis?