first of all u r talking of hand fingers or foot. It can be
rheumatoid arthritis or gout. For that u have to consult near by
physiotherapist asap.
stiffness in back is due to
muscle weakness of back. For that also u have to consult good physiotherapist.
pillow is necessary for your cervical posture. Don't avoid pillow, but it should not b very thick. Thank you.
