Body very itchy sporadic bites. On my face fingers hand arms and ankles happened over night at a friends house. Slept on floor they spread when itched?

Buggy floor. Insect bites can be a trigger for histamine release and so you can get hives after an exposure both at the site of being bitten and away from the bite site as well. This generally resolves within a week. Try otc 10mg cetirizine once or twice a day (longer acting and less sedating) or shorter acting Benadryl (diphenhydramine). If the rash worsens after 2 days, then contact a physician for "next-step" advice.