What would you call this kind of neck pain?

A friend of mine has had this neck pain since late last year. He can't raise his head or control the movements of his neck. He has been getting acupuncture and it has helped a bit. He can now raise his head a little but he still doesn't have the control that he used to have. He's never had a neck injury or head injury. Please if anyone has any kind of idea what this is please tell me. This has been really hard on him and any information would be helpful. Thank you.

He has had MRI and blood tests taken. The doctors has found a tumor in his head but its benign. The doctors has also said that the tumor has nothing to do with his neck pain...in fact the doctors hasn't told him what the neck pain is called or what he can do about it.

it could be a spasm or fast movement that put something out of its place, cold wather, he should deff see a doctor.

Wonder if it is how he sleeps, but such an answer would be too simplistic. If the acupuncture guy doesn't know what he is treating him for how is he treating him?

Has he been xrayed and a CT scan or MRI done? Some nerve injury or pressure seems to be indicated. I would suggest a visit to a regular doctor for thorough evaluation. If only medical intervention is indicated, alternative treatment options can be considered.