My doctor said I have a rare disease and he gave me the name of it, but I have forgotten. All I have is a rash on my chest and abdomen, mostly my abdomen. It doesn t itch or hurt in any way, and he said it is nothing serious, that it will go away on its own in about a month. My aunt had this same condition when she was my age (mid 20s) It s not that important, but can you tell me the name of it?