Re: Stiff Neck
I had the same pain very recently and it lasted for about 6 weeks. started from my neck moved to shoulder and right arm to hand. Most terrible experience of my life. Couldn't sleep on my sides for 2 monhs. Right arm and hand became very weak.
I had treatments from osteopath and was told it could be pinched nerve. after 6 treatments from osteopath I was reffered to the GP who recommended x-ray. X-ray report showed narrowing disk space at some location. GP reffered me to orthopedic surgeon in hospital. Have been more than 2 months and I am still waiting for doctor's appointment. Thats how the NHS is in UK.
Pain has gone by itself but my right arm is still very weak comparing to the other side. I notice this in gym during workout.
You will be better to seek doctor's advise.