Had the same problem. one dr wanted me to take a very nasty drug 6 pg of side effects, no thanks. went to another dr told me to take zyrtec 2x a day, it worked I had something called dermagraphia , it was terrible, you can test yourself by running your nail down your arm or leg, if a red line appears you probably have it, its fairly common with autoimmune problems,
it will work, and it will go away fast. good luck