hi !!! My son is of 5+ years now. But he has always having the symptoms like cough, cold,occasionally headache, snizzing etc. for more than 1 year. Its found to be critic at night during sleeping. As the family history of my in-laws have cold related diseases, i think he has been genetically transmitted with. My brother is an allopathy dr and he has suggested to go for the test of eosinophilia. Kindly guide me, as i am quite bothered about it. regards mansi