The Rheumy I went to last year actually recommended it to me. She said, as you, it relaxes you and... She told me not to go "often" but here and there may help. I am so worried about skin cancer because my aunt and father had it. Would be interesting to hear what others think. One thing to remember...most of us take medicine and tanning beds and meds do not mix well at all.
My choice is not to take a chance, it's a personal opinion. Best of luck to you in getting feedback on this.