When I lived in Washington state at essentially sea level I had arthritis pain in my wrists. When I went on the road I landed at 5500 feet (desert) for five months and had no pain at all. I moved on from there back to sea level for three months and didn't notice any pain then either. I went back to 5500 feet for four months and moved on to 8500 feet, where I've been since early June. No pain. I can't tell you if the lack of pain is due to mostly low humidity or the high elevation, though; I can just tell you what I experienced.