I was in a car accident 2 weeks ago. Within days I had soreness from behind my right ear to my middle finger on my right hand. This progressed into swelling in my tricep, pain in my collarbone and upper back, and numbness in my fingers. 3 days ago my shoulder started spasming and I have not noticed it is lower (2-3 inches) than my left shoulder. The neurologist says probably a cervical herniation. I'm wondering how long does it take weakness and atrophy to show up? I was showing weakness after 1 week and atrophy after 2 weeks - is that really fast or normal?