My 2 year old boy has frequent ear infection, chronic sinusitis, asthma, frequents diarrhea, and loss of appetite. . Since he was 6 months he is always sick. Periferal smear show slight poikilocytosis and burr cell. RBC- 4,25, Hgb- 12.3, HCT- 34.5. He also has history of vitamin D deficiency (26.10). What can cause that he is always sick? What other testing he will need?
Hello, You need to ensure his immune system is normal. Tests such as Egg, IGA, IGM and lymphocyte subsets CD3 CD4 CD8 CD19 CD16+CD56+ cell counts will give a clue. Responses to vaccines are also important, so please consult an Immunologist only to discuss the results. Best Wishes.