Back Pains

Take him to the ER. They are really good at fixing that kind of stuff.

The “back” is a rather large area and has a lot of different types of pain as well as areas that the pain can start from.
Also you do not say how he hurt his back, what brought on the pain, what he is doing for it now, or any other information that would be really helpful here.
I am sure he has been doing what he can to help the pain go away and if over the counter Advil or Tylenol are not taking the pain away he really should go to the ER or Dr office to have it examined. Is it mucle pain, spinal pain, kidney pain? A little more info and maybe we can give you some pointers for Dad.