I have had RA for about 10 years and am taking methotrexate once a week. I often have stiffness at the back of my neck, shoulders, and sometimes the upper arm areas. My acupuncturist uses the Infratonic machine in all of her treatment rooms…and that is how I first learned of it. So I bought one about six months ago. I keep it on a table at the foot of my bed with the unit pointed at my feet. It is turned on LOW and CONTINUOUS all night long. If I have any problems upon awakening, why then I just rub the hand unit over the area…or hold it on the area for a few minutes. It is a real godsend!