My chiro uses a cold laser { also called low level laser or soft laser} for my TOS, CMP and C spine pain.

Denise-quote
[When I was injured at work it caused a RCT, stretched/torn ulnar nerve, severe sprain of my wrist (all on the right side), and a slight buldging disc in my neck which is causing neck pain and sometimes SEVERE headaches. No one diagnosed me for so long. Then, my left hand and arm began to hurt and turn colors also and I was told I developed CRPS II (and possibly TOS).]

Ahh - that's what i was wondering if you might have some TOS type of sx also - those could be what is flaring for you.
We have a TOS forum here too- you should visit it - quite a few have RSD & TOS -
but don't cross post in both forums due to limits of arm use.