Do the blisters/scabs ooze clear and or yellow? If so, it could be eczema. You can try Neosporin OTC to see if that helps or get a script for triamcinolone acetonide - after that you'd need a potent steroid cream. I've had much better luck with creams than ointments. Good luck.
BTW the itch is part of the eczema.
