I haven't been diagnosed with pityriasis rosea yet but I've had these spots all over me, and I my back my stomach/chest my neck and now there on my thighs and arms. I went to the doctors and they suggested it was scabies.  I'm only 17 and I don't have a clue what's wrong with me, I also have a red large patch on the my back which my family and I thought could be psoriasis, but is it? It's so itchy and irritating they prescribed me with pemethrin cream which is for scabies, and I put it on everyday after I get a clear lukewarm bath, it does help stop the itching at night but not all the time. What could this be? Can anyone suggest anything?