Does anyone know if some adolescent children's white blood cell counts can run low with no apparent cause? My son was checked for heart problems (which turned out fine) 15 months ago at which time his WBC was 3.9. 3 months later it was up to 4.2.
His doctor had moved away and I recently took him to a new doctor for a check up and told him about this. It was 3.5 this time. The nurse called to tell me the results but said he wasn't concerned because he has a history or low WBC. She also said his neutrophils are normal. He doesn't get sick often at all. He does have joint aches at times. He has a twin brother who had severe joint pain but is outgrowing as I did in my teen years.
I would greatly appreciate any information anyone may have to share.