Type IV allergy


i have been suffering with allergic reactions for the past year that are so far unexplained. I’ve done a bit of research and it would seem I have type 4 sensitivity which is linked to auto immune problems, hence MS. (I was dx with RR MS in 2006). I was just wondering if anyone had experienced this? My Drs don’t seem to know whats going on and after my 2nd week signed off work I am started to get a bit frustrated!!! I’ve been to dermatology for patch testing and an allergy clinic for prick testing and all come back ok!

many thanks for any replies and stay well