Hi tsc3919. If you haven't already, you should absolutely contact your doctor about these major blood pressure swings. There can be multiple reasons, both RA and non-RA related, for these changes. For your protection, we cannot give medical advice over the internet, but a doctor or urgent care center should be able to provide diagnostics. Hoping you get some answers soon and please feel free to keep us posted on how you are doing. Best, Richard (RheumatoidArthritis.net Team)