Dermatology Questions? Ask an Online Dermatologist.
Hi and thanks for the query,
This is most probably bed bugs bite. I would suggest you dhould inspect your bed and linens for these bugs as itching at night with such rashes is typical symptom, Other possibility is scabies which also cause itching at night time. Use antiscabies lotion which is available over the counter. Remove all clutter from your home, which makes finding bed bugs easier..Wash and dry your bed linens on the hottest temperature permitted. Closely inspect any second-hand furniture before bringing it in your home..Inspect your home after moving, trips, service calls or overnight guests.
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Wish you good health.
Then there is a possibility of allergic dermatitis i would suggest you should visit your dermatologist to get exact diagnosis and treatment accordingly.