Suggest Treatment For Itching On Skin

Hi I was diGnosed with pityriasis rosea by a dermatologist and if has been goin on for like 2 months now,I could see that its starting to dry out and is peeling.Some of it were healed but the thing is that it is very itchy,some of it are on my face.Im using cetaphil cleanser during bath and bath salt as well,both seemed to be effective but I just cant help myself scratching my skin because it is reAlly very itchy.I am using nivea lotion to alleviate the dry skin.please give me some tips on how to relieve the itch further. thak u.. by the way im 24,height is 4'9.