Occasionally when I am close to falling asleep I start having these surges of strange pain in my neck, face, (nose mostly) chest, and arm. It is hard to describe what it feels like, maybe a sharp and quick tingling feeling like millions of tiny needle, or like a mild electric shock. Each time it happens in a different area of my body. When I fully wake and open my eyes it stops, except for a week feeling at the base of my neck. What could this be?