I did a bunch of poking around on PubMed and stuff before I picked it up, to get some idea of how effective they are & for what kinds of pain. So far the unit has consistently dropped my pain level from about a constant 4-5/10 to a 1-2 level dull ache. I can actually *function*.
I have a disc protrusion at L5-S1 that's generally inflamed & sometimes presses on nerves nearby. My entire back aches constantly from the muscles tightening up to protect the area. I've had a hard time accessing PT & massage (tho' just got a new referral, so keep your fingers crossed) & don't exercise much bc I'm exhausted all the time, so this is a big deal.