What causes low WBC in a child?
Patient: My 9 year old son has been ill with various bugs, infections since October 2010, including d&v, coughs, bad cold, flu and then probably swine flu over Christmas.  The doctor did various blood tests to see if there was an underlying reason and they came back today with low white blood cells.  She's said she'll retest in 3 weeks.  Should we be concerned? Thanks Doctor: Hello,Cause of many infections includes white cells and many causes dec white cells. If it is less than 4 then it's the matter of concern.But the primary infection will be treated sooner. They will get normal in case platelets and HB is also normal. Hope I have answered your query. Let me know if I can assist you further.Regards,Dr. Hina Javed