The Ring Finger On My Right Hand Is Stiff And It Hurts To Bend It. It Even Catches When I Straighten It, Especially In The Mornings. I Have Not Swelling Or Deformities. Both Hands Are Stiff, But This Finger Is Getting Worse. Is It Arthritis?

Arthritis has a tendency to start in the hands and feet. From what you are describing this sounds like the onset of some type of arthritis. If possible have yourself checked out by a rheumatologist or even a general practitioner can sometimes diagnose early arthritis and start treatment for the disease.