Rash all over the body, like a heat rash?

Doctor can check: Rashes and spots are difficult to describe in words. Generalized spots may be part of an allergic reaction or an infection. "Generalized" means the rash is all over the body. Bluish or purplish spot may be blood spots and may need blood testing. Sometimes, spots have unknown causes. A primary care doctor or dermatologist can examine both the rash and the patient, to find a treatment.

Physical Examination: 36 y/o says, Rash all over body, like a heat rash? Depending on when and how it started, it can be one of countless possibilities. Rashes are are best diagnosed with Physical Examination backed up with a good history. If this is sudden; could be Allergic reaction. It might be reasonable to take an OTC anti-histamine and then go see the PCP as soon as possible.