I saw a specialist yesterday regarding my low white cell count and other weird problems. He was very thorough and went through a whole medical history with me. His specialism is actually immune deficiencies, but he felt I didnt fall into this category as he said he would expect me to show other infections like oral thrush, fungal nails, severe athletes foot etc. which I dont have. His opinion is that my white cells are "elsewhere" doing something in my tissues, so are not showing up in the blood tests - my levels are only slightly low. He suspects something autoimmune, possibly a resurgence of the sarcoidosis I had a few years ago, or some other autoimmune illness. He was interested in the fact that I'd had a kidney stone recently and says there could be a link. He was also interested in the fact that I have vitiligo and have had unexplained arthritis episodes in the past. He is doing various blood tests to try and pin down what exactly is going on. I am apparently a bit of a medical mystery!