Hello and thanks for trusting me to help you. I am a board certified consultant with over 30 years of experience.
I understand your concern.
Well as you describe,possible causes may include Dermatitis,Scabies,Urticaria
You should try some self care measures like
Take OTC Motrin and Zyrtec.
Also cool water bath can be helpful.
Apply OTC 1% hydrocortisone cream mixed with Bacitracin ointment on affected area.
You should wear loose fitted cotton clothes to prevent friction.
Change your bed sheet, towel and wash them in a disinfectant.
Hydrate yourself with plenty of fluids.
Start a multi-vitamin supplement to boost your immunity.
Also it can be contagious so avoid sharing and direct contact with your family members.
If your symptoms'll not improve or get worse over the time then see your doctor or dermatologist for a clinical examination to rule out underlying possible causes and get treatment accordingly.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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