Yes I had PUPP my first pregnancy around week 9 or 10 and it itched so bad! I only had it on my stomach under my belly button. I was quick to talk to my doctor and she prescribed me an anti itch cream that helped almost immediately. The rash was gone in about a week. The cream I used was called Triamcinolone Acetonide Cream 0.1%. Maybe your doctor can prescribe it for you.
I haven't had exp just read a lot about it says occurs in first pregnancies or multiple n something to do with boys because of the hormones they produce...