It seems that you are having either lichen urticatus or scabies.
Lichen urticatus , also known as papular urticaria
is a hypersensitivity
reaction to insects like bed bug, flea and mosquitoes.
Scabies is an contagious skin disease caused by sarcoptis scabie.
Antiscabetics like oral ivermectol and local permethrin cream
are helpful in scabies.
Short course of steroids and antihistaminics are given in papular urticaria.
For clinical diagnosis , you consult dermatologist
Dr. Ilyas Patel MD