Getting Hot Flash Sensation, Muscle Spam And Grinding Noise When Moving Neck. What's Wrong?
Thanks for the question.
In view of the described symptoms, possibility of cervical spondylosis seems more likely in your case. The momentary symptoms can be due to nerve getting pinched. Symptoms like neck muscle spasm and grinding noise when neck is turned are quiet suggested of cervical spondylosis. Even vertigo/imbalance can be explained by the pinched nerves. I don't think it’s related to hormone or anything metabolic cause.
Surely getting MRI done and seeing neurologist or spine specialist are ideal next steps.
For heart burn / chest symptoms, you can try antacids, diet and lifestyle changes - just to see if they help or not. And if these medications fail to help for a considerable duration, then it would be wise to see gastroenetrologist. In cases of chronic heart burns one always needs to rule out possibility of ulcers.
Hope this answers your question. Please feel free to ask if there are doubts.
Regards