Mine started in my neck on my right side (PD affected side) and goes down to in between my shoulder blades. It started pretty gradually. Sometimes it's just a constant ache, while other days it truly hurts like hell. Like someone is just twisting my muscles in a knot - and laughing at me while they do it. PD can be a bully sometimes. Lately, over the past year, I've noticed that it "moves around" a bit - sometimes going lower into my back and even on my left side as well. I'm not tremor-dominant, so I guess I get to enjoy more of the dystonia. Ugh...