I got it one year from casting too much with light jigs.I was trying to throw them too far and just casting to hard. I had to stop and vertical fish for a while...took about a year and mine cleared up. My wife has fibromyalgia and uses Voltaren gel for her aches and pains. I have tried it on some of my sprains and it is good. I would soak it in epsom salt a while each day and maybe talk to your doc about the creme...it is prescription...pretty good stuff. I also have used vibrators on injuries before too..they seem to increase circulation and promote healing.