Your heart needs to work harder to pump blood through your body, and sometimes blood has a hard time returning from the extremities back to the heart. That could result in your fingers feeling swollen. High blood pressure is often caused by high amounts of sodium in the diet, causing you to retain more water. This excess fluid can make your rings feel tight. If this occurs often, you might want to get your blood pressure checked.
Uncontrolled high blood pressure could lead to kidney disease. Your kidneys have the job of removing waste from your blood and keeping your fluids in balance. If your kidneys don’t have sufficient blood supply, they can’t do their job. This can lead to edema, or a buildup of fluid in your tissues. Swelling from edema is usually in the legs and feet, but you might also feel it in your arms. Even medications for high blood pressure could cause your fingers and hands to be swollen.