Hi Wanda, I posted a post to Mellie earlier that said I had no previous activity in my spine except a slight separation of my sacroiliac. However, Oct. 2005-2006 I was suffering from severe back pain in my L5, S1 which my rheumy said was unrelated to the A.S. (getting old, and weak abdominals?) ---it magically disappeared with the onset of a panamanian parasite (which I got rid of LOL) The pain is back again after 9 months, and now I'm not so sure. Thanks, Teresa