my three years old son has been suffering from noisy breathing sounds like snoring mainly at night and breathing through his mouth for last 10 weeks. His nose is block, and he had 2xtimes lasting for 4days runny nose congestion It all started after viral RTI, which he had 10 weeks ago his lungs are clear and ENT examination normal. he is also scratching his neck and tongue last few days. What we most worries about is that he is not breathing with his nose and sometimes at night time sounds like he is out of breath.