I HAVE MULTIPLE KNOTS UNDER SKIN AND THEY CAN HURT WHEN TOUCHED. MOSTLY ON THIGHS, ARMS, AND RIB CAGE. COULD THESE BE SOME KIND OF CANCER? ALSO MY BLOOD VESSELS STICK WAY OUT AND ARE UNSIGHTLY. THINGS JUST DO NOT LOOK NORMAL, AND DO NOT FEEL NORMAL! SHOULD I SEE A DOCTOR ABOUT THIS? PLEASE ADVISE!! THANK YOU , WORRIED DALE