Welcome to healthcare magic
I am thinking of possibilities of Scabies
and insect bite reaction most probably bed bugs.
Scabies is due to an itch mite which lives in the skin. It is contagious. Is there any itching in your family members?
Bed bugs usually crawl out of crevices to bite at night. Watch out for them.
Permethrin 5 % cream is a good treatment for scabies. 30 g tube should be applied all over body from neck downwards after a scrub bath at night, wash off the next day morning during bath. You can get it prescribed by your doctor.
Hope this helped