I have a rash with red and white bumps that's on my back and butt it's also on my thighs and my pubic area and there's some red patches it's very itch

Doctor can evaluate: Rashes are hard to describe and hard to visualize in words. Rashes with red and white bumps may be folliculitis, which is an infection in the little hair follicles in the skin. Rashes that itch a lot may be allergic reactions and/or skin infections. A primary care doctor or a dermatologist can evaluate to decide on a diagnosis and talk about treatment options.