@ Annette : It may have something to do with a vertebrae being out or putting pressure on nerve/muscles. I am not a doctor, but I monthly see my naturopath for my back alignment as I have a lot of pain all through. sore knees, headaches-spikes/dull , pelvis joints -cant make big steps or walk fast, tightness in shoulders, sore arms, and mainly bowel /abdomen issues- which all get resolved for a short while after realignment. basically -if a vertebrae moves out if's position, puts pressure on all sorts of muscles and nerves. few of them are with the abdomen and the symptoms are varied. pins and needles, pain all through the sides, can block the gasses in, constipation, folding the intestine (causing horrible pain), even leg pain (pelvic to the knee) and also ovaries as they are also connected to the intestine and muscles and nerves. I could easily have PCOS, endometriosis and IBS but hard to tell because my back is out most time (week muscles and mineral deficiency and tests for them aren't cheap). I drink Vitamic C (helps a lot but have to be often), massage the abdomen and back (long , light,easy movement -NOT too much pressure and short movement) , icepack! - but not where the kidneys are, and muscle relaxant (which Vit C helps -mine has lots of magnesium - so that are a must). hope this helps.