Why does my kid keeps sneezing? allegies

You are likely right: Try some antihistamine to see if it helps. If only partly helpful, see your family doctor to get something more effective.

Possibly: Sneezing is the reflex action to get rid of an irritant. That irritant can vary and could include infection, pollution, noxious sunstance and allergens to name a few. What helps to distinguish amongst these is the history of when sneezing occurs.