Hello, I have itchy bumps-bra area, panty line area, base of neck, arms, back that look like mosquito bites that are raised, white & red, wide & small?

Hives. Raised itchy bumps could be hives, which are due to a whole host of causes. Anthistamine medication could reduce the bumps and itch if truly hives. However, a photo of your rash is very important. Either consult a physician on this site with a photo or in person, or see a doctor in person to diagnose if the rash does not improve.