It's terribnle, isnt it? You have my sympathy. All I can say is, it went away eventually. I have vivid memories of touring the west of cotland, howling and grizzling, kneeling on the back seat of the Saab trying to enjoy the scenery. Kneeling in the car, or hands and knees on the floor at home, seemed to be the positioon of choice. And walking up a hill evry slowly was good I recall, though coming down again wasnt so bright.
   Dope has been mentioed as a good one. I would recommend good old fashioned alcohol which was always a faithful friend. It passes. What more can you say? Whether any treatment is any use, I couldnt say. too many variables to make a decision. try to avoid the painkillers where possible(but obviously it isnt always possible).