My late grandmother had RA (rheumatoid arthritis) from age 27 onward. A sibling developed NHL (lymphoma) in her 30s, and when I was a child my uncle succumbed to brain cancer in his early 40s. I'm in my early 40s now. My lymphocyte count has been low on every CBC I've undergone for many years, but my doctor is not concerned. In or around 2004 my WBCs were so terribly low I was referred to a cancer doc (I had been sick 9 out of 12 months that year, which is unusual for me). By the time I got in to see the oncologist, he put my blood through an in-office test and sent me home with a shrug of the shoulders, saying the counts were fine and to see another type of specialist if my symptoms returned.
I've always had moderately low lymphocyte counts, with only one year where my white blood cell count was dramatically reduced for reasons still unknown. I've had the same primary doctor for over 20 years. I have told her that every time I lose even a minor amount of sleep I develop a mild sore throat.
On a daily basis, I take a lot of vitamins and supplements to fend off feelings of fatigue or being run down, but this is merely chalked up to a suspected case of fibromyalgia. For all this history, I have no idea why my lymphocytes come back low year after year. I do take corticosteroids for asthma (inhaled, not tablet form). Could this be enough exposure to skew my lab work in this regard?
My doctor says there is no need to worry unless my counts are too high (versus too low). Should I be concerned that no further testing has been done to determine why my immunity is chronically on the low side? Moreover, if I'm not satisfied that the matter is being taken seriously, what kind of doctor should I consult?