hi depending on his past it could be from just lack of exercise i get very achy if i sit around to long body's that are use to working are like that. i get jittery legs as well from not walking do love to be out dog walking so this could be the same with him just lack of exercise. just some thoughts. good luck
my dad insists his pelvic hurts and is currently in insititution being treated for schizophrenia. doctors have done mris and cts and have found nothing wrong with his pelvis. he was first diagnosed with bipolar over 20 years ago. he is now 50 and is being treated for schizophrenia or leaning towards schizophrenia. to note- my father was previously an alcoholic and chronic smoker. i believe my dads pelvis hurts but tests have apparently shown to prove otherwise. i have researched a little and only found "prostadynia" but not sure this even correlates. could something be wrong with his pelvis?