I have been experiencing arch pain when working out with my trainer, particularly when we do upper body weight work, which seems odd. The pain is confined to my right foot. My right leg is one and a half inches longer than my left leg, the result of a decades old car accident. I wear a corrective lift on my left shoe, but I do not experience arch pain in that foot. I don't know whether I am developing Wikipedia reference-linkplantar fasciitis or what, but I'd love to know why I am having this pain and what I can do about it. It even hurts when I come home from the gym and take off my shoes. My arch will cramp up as well some days at work when I am on my feet a lot. Back in spring of '08, I damaged my right Achilles tendon and spent 4 months in an air boot, so I do not know if this arch pain is related to that old injury. I just want to know what is going on and what I can do about this frustrating arch pain that occasionally kicks up.