A 3-year-old child has developed this type of tiny papular Group of vesicles over face and at an angle of the mouth. No history of the fever, drug ingestion, loose motions. He had a rash on face three months back also.

Cbc at that time showed Eosinophil count 18% and treated with anti-allergic oral. Metrogyl gel and Erythromycin gel loyally. What is this lesion?