H.G.
My daughter is 12 and her allergies started around age 3. This last week has been terrible here in NJ. Just had her at the allergist yesterday and we've upped her meds. A good allergist will know how to tell if it's allergies or sick. Find a good allergist so your little one's system doesn't get overwhelmed with all this pollen flying around - sometimes a little prevention of the allergy triggers will help to keep it from going into a sinus infection or cough. My daughter has asthma too, so we have to nip the allergies in the bud. Good luck