I think, if you have rsd, you have by definition, sweating issues. "Changes" are what seem to set it off. Change in your mood, the temperature, the wind, the humidity, the barometric pressure, your blood pressure, someone looks at you funny, someone says somethiing that annoys you, someone says something that delights you.

Anything that "changes" something that your body or, SNS, responds to, seems to set it off. It's like the odd hair / nail changes, just more instantaneous.

As I'm getting more severe, I find great difficulty drying off after a shower.
I hafto take a real cool shower at least at the end, to try to close up my pores, sometimes it works, sometimes no luck.

I'm sure there's another prescription that can be tried, I'm just so sick of pills....

One trick I do use, is I spray myself with anti perspirant, on places where it gets bad, for me.

Good luck,

Pete