I have had the same thing. I think roundworm slinks his way into my scalp, lays eggs, they hatch and travel down neck to shoulders. Trichinella does this. I just started taking 3.5 ml of valbazen yesterday (aalbendazolee). I also bought DMSO at tractor supply and mixed it with albazen and massaged it into my shoulders. It made a huge difference. I've been zapping my scalp when I feel them move. This is a terrible dilemma. Hope you are better