Thanks a lot for responding @Dr. Priyanka Patel mam, U are alwz giving helpful suggestions.

i had visited n he prescribed ata rex syrup a lotion and a tube to apply but when i stop it again appears

These will typically be seen in hands and legs including neck then don't worry but if it happens on interior of thigh and face then you need to see pediatrician

it happens on almost everyday and get vanishes after sometime

Is it reoccurring? Happens in three days and vanishes