Hi
A TENS unit helps some but aggravates others,,in my case It Aggravates[I have RSD II-Causalgia] if that part matters or not, That I do not know,,You can try the unit and see what happens,,in the case that it does aggravate,it ussually takes a few hrs after its use[after its been shut off] thats when most times that the flares will appear,,good luck to you,and everything is worth a try,,,as for where to put the leads,everyone is different,,my Dr had me put them on boths side surrounding the area where the nerve entrpment was,,,,I dont know of a dr in that area,But when me and my wife travel a great distant to see dr;s,,we use a small_5ft in lenght, air matress that we fold the seats down and it fits in the back of the car,we put a comforter on it witha few pillows for me to maunuver around for comfort and down the road we go,,we get alot of stares,but it eases my pain to lye down instead of being in a seated postion for hours at a time,,I just keep passing up the snacks and drinks to my wife,,,,just an idea,, bobber