Dermatology Questions? Ask an Online Dermatologist.
Thank you for your question. My name is***** and I will do my best to provide a useful input.
Would a photograph with a flash be possible at your convenience?
Thank you for the photographs - do these spots clear up completely in 24 hours? Do they leave any sort of mark on doing so?
Do you have any history of allergies?
Thank you for the information. This rash and the way it comes and goes seems allergic to me - urticarial dermatitis would the technical term. Finding the allergen is quite tough though - some patients benefit from investigation and in some the condition burns out on its own. I was going to recommend seeing an allergist but you've already done that. Blood allergy testing can be considered if only the skin prick test was done, as well as another allergic test called Patch Testing.
I am opting out of the question to open it to other experts in case any one has a more specific input.