Do Scabies Rashes Re-occur?

I ITCH ALL OVER AND ONLY GETS RED WHEN I ITCH. DOES A SCABIES RASH COME AND GO WITHIN FEW HOURS?? I WAS RECENTLY IN THE HOSPITAL FOR A LUNG OUTPATIENT PROCEDURE AND HAD TO STAY IN A HOTEL FOR 2 NIGHTS. MY DOCTOR THOUGHT IT MIGHT BE FROM THAT. SHE PUT ME ON STEROIDS. I THOUGHT A SCABIES RASH IN CONSTANT. BRIGHT RED AND DOESN'T GO AWAY UNLESS TREATED. MINE COME AND GOES BUT NOT REALLY ANY BUMPS