Please suggest a proper management of drooling rash in babies

Extremely classical lesion. Just since last night. Posted here because it fits the textbook description 'dew drops on rose petal'

pt have no itching,,, pls dignosis n treatment pls

these type of lesions on hand and face sence 15 days

A 9 yrs old girl presenting with painless papular lesions over extensor surface of upper limb since 1 year as shown in picture.No itching.What could be the dx and t/t?

4yrs girl have vesicles at axilla and knee and itching .first started like bulla.pls suggest diagnose and treatment.