Usually will be gone after you deliver, PUPPP is generally benign :) If it’s really PUPPP, generally moisturizers and topical steroids will do the trick at relieving symptoms. Only thing is you have to make sure it’s indeed PUPPP - basic blood tests may be required to rule out other more significant of causes of itchy rashes in pregnancy (e.g. liver), so do consult your gynae who may either do the necessary tests or refer you to a dermatologist for further testing if required!
check with gynae on this