I poked around in Google a little and found a couple of places that talk about it. It seems that some people are affected by altitude and some aren't - it seems like it's sort of like PMS where some people find it increases the symptoms and others don't.
I find my RA is better when I'm in the Alps, at 1800 metres! But maybe it's the dry air + not the altitude at all.
The altitude and the "absolute" humidity go hand by hand. Less air pressure means automaticly less "absolute" humidity. But not "relative" humidity. This means that on a Sunny "relatively" dry day in LA lets say 60%RH will have more "absolute Humidity than being in the Alps on a rainy day with 99% RH. This can be concept difficult to understand. I used to live in Denver,CO.. now in PA. long story short I take pain pills sometimes for muscle pain and joint pain here in PA never had to in Denver.
Whoops..misread the question. To respond to the "altitude" issue...not ATTITUDE! (LOL)
The best I have felt in over 2 years of very progressive RA was during 9 days in Hawaii and 5 days in Myrtle Beach, both very low altitude places.
For me the answer is yes!
Poor attitude means reduced willingness to fight fight fight this disease.
Everyday I need to know I am going to make today the best day possible and empower the RA as little as possible. I must have a positve attitude to believe I can manage and defeat this beast!
It also helps to do what I can for the people around me and to avoid getting angry and stressed.