LEFT THUMB FREEZES INTO A BIG CRAMP AND GETS FROZEN IN PLACE FOR UP TO 15 MINUTES. EXTREMELY PAINFUL. MUST FORCE THUMB OUT OF FROZEN STATE BY FORCE. AT THE SAME TIME SEVERE CRAMP ON LEFT SHIN WHICH TRAVELS UP MY BODY UP TO MY LEFT ARM TOWARDS LEFT SHOULDER. ARTERIAL PROBLEMS? I HAVE HAD 3 ANGIOPLASTY PROCEDURES, 2 ARTERIES ARE CLOGGGED (ONE HAS 2 STENTS). DO I NEED TO WORRY ABOUT POSSIBLE BLOOD CLOTS?