My daughter has always had signs of allergies, however I ended up switching pediatricians after the first year because of how my old one wanted to treat her. He wanted her to take nasal steroids and zyrtec daily to treat them, when I've lived with severe allergies my whole life and knew that was not necessary - she was not that bad off. Our new peditrician explained that they usually do not treat allergies before kids are 3, though she most likely (he said 70-80% likely) does have them because my husband and I both do and she gets symptoms seasonally. It's hard to treat them, and not recommended, prior to the 3rd full allergy season (year) because allergies have not fully developed and more may develop, some may go away, etc. He said to just give her nasalcrom or plain nasal saline to clear out her nasal passages when things flare up if she's uncomfortable. IT's seemed to work very well. The nasalcrom actually works quite well, even for me, during allergy seasons to help reduce the nose running.