What Causes Fatigue Along With Swelling In The Body And Hair Loss?

My daughter has recently had a wbc count 2.4 on average after 3 checks. She has had a lot of health problems her whole life. They are looking into a possible auto immune problem. Hx includes hypothyroid disorder, low bp sbp 70-90 dbp 30-40, hr 30 (yes 30) to 60. She has neurocardiogenic syncope-rarely an issue, raynauds-pretty severe-no ulcers, compaints of fatugue, recent complaints of general swelling that have not visualized since she lives away from me, and states that she has been having hair loss. She has gone to a rheumatologist, who then sent her to a hemotologist. He/she sent her back to a rheumatologist. No results from blood drawn. How could this happen to one person without there being some other cause. btw she does have an artery branching off the wrong place in her heart which was found because of her symptoms syncope. I was told, and assured that this was not anything that needed treatment. so there you go. Have at that.