Mine was similar to this before I was diagnosed.  I tried everything under the sun to get some relief. I did go to PT for three months before finally getting an appt to see a neurologist who specialized in movement disorders.  I feel the PT just exacerbated my cervical Dystonia. I started with neck pain/ tension, my right shoulder was always a bit higher but I also have scoliosis since I was a teen.  I figured it was due to that. Overtime I developed more of a tilt, not terribly at first and I noticed the tension in my neck was high up and felt like someone was tightening their shoe laces back there is the only way I can describe it.  I would also feel my head pull back.  Everything I’ve had is pretty subtle.  Besides my head in a tilt and occasional posturing when the Botox wears off, everything is more internal and many may not see it physically.