Excessive itching all over my body, need advice!

I have been struggling with all over body excessive itching. Some days I’m fine some I’m not. My dermatologist can’t figure out what’s causing it but gave me Triamcinone 0.1% cream for spot itching but most of time it grow. To all over body. Not much for rashes or sores just all over itching so my primary gave me hydroxyzine , that helps here and there but lately it’s like I can wake up between 3-5am and take 100mg it stops but I sleep till like noon 1 pm ish n by 4-5 pm the itching is back to where I will scratch myself raw or sores or just rashes. We have tried the different soaps throughout my life via laundry, bars n body wash n shampoo and conditioner with no noticeable changes. Any suggestions like what my problem is, or any home remedies to ease itching. Anything will be appreciated for advice to help. I do see my primary Friday and plan to see if she can prescribe something different then hydroxozine. Thanks ahead of time.