My Arms To Back My Hands Itch For Days. The

My arms to back my hands itch for days. The only way I go to sleep I have to take zertic and 4 to 5 benedril and sometimes chew peptide of hives or welps. My Dr gave me hydroxy zine and that doesn't help.....just let me sleep. Appears it happens within couple months. This is something new happening. I'm suffering now. Started last night