One reason may be that inflammation creates a vicious cycle in the body. Inflammation causes swelling. This swelling overnight in an immobile joint causes the surrounding muscles and tissues to tighten up, which in turn causes pain and stiffness.
Another reason is that in inflammatory arthritis, the immune system attacks the synovium or lining of the joint, which causes it to become inflamed and swell. During the night, while your joints aren’t moving, the inflammatory materials can cause joint fluid to collect in and around the joint, which makes even more swelling, which leads to the pain and stiffness you feel first thing in the morning.https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbkFCbC12RzFpTW5paWZWV05fb1pmYXA4ZFA3UXxBQ3Jtc0tuUGhUTjVCTDNfRHpIUzgxcVRJQ1h6NkgxMVlOMXpiWFN5VzJSOWlkWDZYdkRPV3VfbmtxNGVMeWRIVzhta0pLQnpIUHdoZDlxMmhUUHFnWFlMVjgySzRJaE9ZTjlNa0FJODgybmppZHhqWURWeDI1Yw&q=https%3A%2F%2Fwww.drkristieennis.com%2Fderma-edge