The pain from ES can cause a general tenseness and that can cause stiff neck and muscle pain- some members have had a bit of pain relief with Baclofen or medication like that. If ES is vascular, you can get pain radiate along the carotid artery, so that can make the front of the neck painful down to the collar bone. There’s also nerves to the shoulders which can be affected by styloid compression/ irritation, so in that case it can cause shoulder and arm pain r weakness. I have a disc problem in my neck so surgery hasn’t stopped all my neck pain, but physiotherapy exercises have helped it a lot.