Sure could be, but why jump to that huge diagnosis without considering lesser things, and more than one?
Your profile says you are a musician, do you find these symptoms more pronounced after a long practice or session? I would consult with a physical therapist as it could be an ergonomic issue, or you might need some adjustment and releases of your spinal column (and little bones out of place could be causing the tingling and such.)

The twitching legs could be that you need adjustment of your spine, or it could be RLS. (Restless leg syndrome.)

Good wishes on clearing these up.