The cause of neck deviation is not caused by nerve elasticity, but by muscle and tendon problems. This is the answer to your second question.

I don't know if your problem is innate, that is, congenital, or what causes it, that is, secondary. So give some rough solutions for reference only. One is plastic surgery, which can be recovered soon after operation. Secondly, acupuncture, due to the lack of statistical data, may take a long time to recover, or it may not work at all. The biggest difference between western medicine and Chinese medicine is that western medicine has very detailed statistics, while ancient Chinese medicine does not. Of course, modern Chinese medicine is making progress. The so-called statistics is to count the success rate and failure rate of a certain disease treatment plan, so that the treatment is more targeted.