Effect on lifestyle?
If your kid is playing robustly, resting well at night and the symptoms bother u more than the kid, simple monitoring is ok.
Reduce or eliminate exposures to known irritants, smoke/fumes/etc. & a trial of otc allergy med may be in order. If kid is dragging around, not up to playing with peers, appears worn out or otherwise down, a look over with his regular dr is in order.