I have an itch that comes and goes over the years, there is no rash
, but it just starts itching from under my skin, and it reoccurs in the same areas, my knees, my buttocks, may spread to outer thighs. the itch sometimes sting when triggered, when i scratch the area raises like welts, and get dark red. I a 37 year old female. it started six years ago, the longest period of rest before outbreaks is 1 year.