 [ Symptoms ] i stand on my feet all day at work my right heel hurts as if i have a bone sper what can it be  i also do welding as a profession continuously non  stop 10 hrs a day am i getting to much vitamin [d] from the weld flash [ Disease ] i am sorry to hear you are going through this let me take your second question first you are not getting any vitamin d directly from the weld flash it is true that exposure to low levels of ultraviolet uv radiation such as from sunlight promotes vitamin d synthesis creation if you will in the skin it is doubtful you are exposed to enough uv radiation from weld flashes to cause an overabundance of vitamin d production this is especially true if you are covering your skin with appropriate protective clothing as to your first question while it is possible you have a bone spur on your heel the most common cause of heel pain is a condition called plantar fasciitis plan ter fash ee eye tiss the good news is you can take steps at home to relieve your heel pain if it is in fact caused by plantar fasciitis that will save you a trip to the doctor home treatments for plantar fasciitis include resting your feet icing your heel wearing a night splint and more if you are not allergic to any medications you probably are safe to take an over the counter pain remedy like ibuprofen too if the home treatments for plantar fasciitis do not clear up your heel pain then i would suggest you see a medical professional it is possible you have a strained ligament or even a stress fracture good luck