When to get concerned

It is very common for young children to snore. This is not necessarily anything to worry about. 

However in some children, the snoring and airway obstruction can be much more pronounced to a  point that it affects their sleep pattern.  There are different terms used  to describe this; including sleep disordered breathing where there is fragmentation of the sleep pattern  and a more severe form when there are actual pauses in the breathing - sleep apnoea.