Will severe arthritis in the neck cause extremely high blood pressure?

Welcome @ccountie, I'm just a patient like yourself with no medical background but I think severe arthritis in the neck can possibly increase your blood pressure but it is always best to discuss this type of question with your doctor or a specialist. Here's some information that may help answer your question.

"Cervical spondylosis may be one of the causes of secondary hypertension. Early treatment for resolution of symptoms of cervical spondylosis may have a beneficial impact on cardiovascular disease risk in patients with cervical spondylosis."
— Cervical Spondylosis and Hypertension: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4602471/

Have you talked with your doctor about a connection between your neck arthritis and high blood pressure?

scary

I have degenerative disc disease and my 5th & 6 disc’s are pushed in a little also bone spurs. I always thought it was the pain that caused my higher blood pressure. I take blood pressure medication and it keeps it down. I realize that many people believe that those meds cause different issues but I think those issues are less severe than the alternative. Just my thoughts as I am not an expert.

@ccountie I am a retired nurse and back patient. The pain associated with your severe arthritis could certainly raise your BP and usually the upper number but not both. As John recommended if your concerned see your doctor.