Welcome to healthcare magic
Even though you have searched for bed bugs and didn't find any, I will still suspect bed bugs. They are difficult to find. What you are having sounds like a typical papular urticaria( insect bite allergy
) and bed bugs are high on the suspected insects. Everyone need not be allergic to the bite which explains why others in the house do not have it.
You will require a topical steroid
cream to decrease the rash
. You may continue benadryl
. Identify the bug and tackle them to prevent new lesions.
Hope this helped