Infrared, Laser, photobiomodulation for pain

I am a long-established patient with MS, arthritis, fibromyalgia & spinal stenosis, in the care of excellent providers.
I'm curious to know of peoples' direct experience in using infrared or laser therapy, PBMT (or similar professional treatment.)
I've got access to world-class medical care-- it's really frustrating to be at wit's end.
Thank you my friends.
(Yes I'm in touch with appropriate doctors. )