My son is going to be 5 in August, your son has exactly what my son has.... it is
pneumonia.....my son has severe allergies,he gets
pneumonia every spring and fall,winter.... he always has pneumonia... u should really get him checkingd out for allergies, my son, gets the fevers,nasal drip in the throat which makes him gag,he phlems up very badly,u can tell in his eyes he has allergies,his cough is constant and diahrea comes and goes....too plz get him checked for it....