Skin itching while sitting and lying down

I have finally come to the conclusion I have TMS. What I notice is when I sit or lay down, my skin just starts to itch and feel like it is crawling. I used to just feel strange sensations in my legs, but it has now turned into just itching all over. Is this the progression? Like is my brain trying to replace the other sensations I used to have now with this? Anybody else have this? I dont notice it unless I'm sitting or sleeping - it drives me crazy but I'm hoping this means I'm moving into another stage or recovery.