Pain, Tingling or Weakness: When more rare possible causes such as blood clots have been ruled out, these three symptoms most frequently result from pressure on the nerves in the lower back, and are sometimes also due to pressure on the spinal cord in the neck or lower back.  Locating the source of these impingements, gently freeing them as best as possible, realigning aberrant spinal structure and rehabilitating the areas that have allowed discs or bones to affect the nerves feeding the feet and their muscles, is the course of care that will correct the source of pain, tingling or weakness in the legs.