Won't bore you all again with the full litany. Basically, I am finding it increasingly difficult to partake in my usual running activity. I have tried to drastically reduce and at times totally stop running (for a couple of weeks) but whenever I go out for a run now my left hamstring is increasingly tight and my left quad tightens. I went for a run last night and only did 2 miles but sort of struggled through. I was sort of half expecting to feel the effects this morning and sure enough upon waking my left quad feels like a have done a marathon...not really painful but that feeling of being overly exerted...now, I used to run marathons and not have this happening so it is just not logical...of course, all my daily pain is lower left side back ache, piriformis and upper leg pain so it all fits together. What is of course strange is that this feels so localised really...never below the knee and never on the right. Its also weird as to how my whole body feels ok this morning but my left quad just feels so fatigued and cramped up. I really don't know what to make of it all. On a structural level I can imagine that there is some alignment/impingment issue but then when I look at the pain pattern and timescale that doesn't seem logical...I think if I look at this from a TMS perspective it sort of makes sense because the feeling in my left quad now is like a lactic acid type build up thing which I believe is basically an lack of oxygen. What is annoying is that up until quite recently I could run and it would actually ease the discomfort but this just doesn't appear to be happening now...I think I'm just full of fear and doubt as my 'western' brain and thinking is telling me that this is a physical/structural issue that is deteriorating but then I suppose this could be a classic conditioning thing going on. Losing the ability to run due to my pain was always a deep seated fear and now it seems to be happening. Thanks for any thoughts and comment.