Itchy rash all over my body it's unbearable itchy and burns?

Doctor can examine: Itchy rashes are usually allergic reactions like hives, but sometimes are from skin infections. People who have past eczema can have itchy rashes appear off and on. Sometimes there are skin infections like folliculitis, shingles, chicken pox, impetigo, scabies, etc... A doctor can examine to see what it all might be. An in-person exam is best, but a video exam such as on HealthTap's may suffice.