I have a bumpy skin rash on my back upper thigh. It itches and is red. I noticed it oozing and that’s about it. It’s one main rash about 1 and half quarters in size and then there are three small almost like pimple red bumps about an inch up.?

Doctor can examine. Bumps and spots can be from many causes, such as: hives, viral infections, other infections (impetigo), medication causes, hot-tub rashes, heat rashes, reactions to creams or lotions, allergic reactions to various things (poison oak, allergenic foods), etc... That means a rash that persists, looks worrisome, or may be infected should be checked by a doctor... in-person or online.