I HAD POLIO IN 1943. THE LINGERING AFFECTS ARE SOME PARALYSIS OF MY LEFT FOOT WHICH IS ALSO 2 SHOE SIZES SMALLER THAN MY RIGHT. I HAVE EXPERIENCED LEFT FOOT SWELLING ON AND OFF FOR MANY YEARS, USUALLY AFTER EXERCISING, E.G. WALKING, RUNNING. I m 78. VERY RECENTLY, I EXPERIENCED AND STILL EXPERIENCE, EXTREME SWELLING WITH SOME CORRESPONDING PAIN ASSOCIATED WITH THIS LEFT FOOT. THE RIGHT FOOT IS UNAFFECTED. YOUR THOUGHTS?