A Case of Langerhans Cell Histiocytosis Presented as Prolonged Eczematous Rash

We presented a 9-month-old boy had multiple, pinkish-yellow, erythematous vesicles on his trunk 6 months ago. There were also many erythematous, moist and erosive eruptions on scalp, both axillae, inguinal regions and intergluteal sulcus. He was treated as having varicella and seborrheic dermatitis. However the symptoms did not improve. Histopathological investigation of the lesions revealed eosinophil with positive immunostaining. He was diagnosed with Langerhans cell histiocytosis and received chemotherapy.