Bumpy itchy raised red rash?

Dr. can look at rash: Rashes are hard to describe in words. A doctor has to look at a rash (video may be enough, if a good camera) to see what it might be. For common non-infected rashes on arms, legs, or the trunk, such as eczema, mild reactions to plants or chemicals, excessive dryness, or little itchy bumps, some people try hydrocortisone 1% cream for 1 week until the rash can be examined by a doctor.