 [ Symptoms ] my doctor diagnosed the pain in my foot as tendonitis no xrays were taken and i am questioning if that is the problem the pain comes and goes and is intense when it starts the vein on top of my foot to my ankle bulges the pain is mostly in the top of my foot from my big toe to my ankle and hurts when i am just sitting [ Disease ] i am sorry to hear you are experiencing this it sounds very uncomfortable i am sure when the doctor examined you he or she asked if you had injured the foot in any way if not then the logical diagnosis would be tendinitis which is an inflammation of the tendons    the fibrous tissue that connects muscles to bones unless your doctor thought a bone was broken he or she would not order an x ray soft tissues like muscles and tendons do not show up on x rays if you are not satisfied with the diagnosis you could always seek a second opinion i am not sure what you believe might be wrong with your foot but there are other potential explanations for the pain you are experiencing including arthritis wishing you well