I get it really bad too, my dr lets me use benedryl at night. Also I found liquid vitamin e oil helps a ton.
Oh, I had itchy palms during pregnancy and it drove me mad. It is a hormonal reaction. My doctor had me use 'coraid' which is an over the counter cream. It helped a little. Tell your doctor and see if they recommend a topical treatment for it. The itching stopped as soon as I gave birth. It was literally so bad that once in a while, I would rub my hands on the bricks of my house to get relief. So, I feel ya. I hope the cream helps. good luck