I have developed a rash that has spread all over my body, it itches tremedously and is very uncomfortable. It has now spread to my face. The Dr s. so far have been unable to diagnose what this could be. Have been tested for parasites, scabies, fungal, had blood tests and the 80 patch test. No diagnosis, I am desperate to find out what this is so I can treat it. Nothing seems to help. Have been on steroids twice, antibiotics. I believe this could be allergy related.