Three years ago I started the RPAH elimination diet and discovered I was suffering intolerance (to dairy as well as other food chemicals). Although other symptoms cleared up, there were a few niggling things, particularly the blocked and running nose, always having my sleeve or back pocket loaded with tissues, ready for the inevitable moment. I had always suffered this morning and evening ritual of a running nose so 'just lived with it'.

(Trying the diet again 3 years later) After a week of full elimination, the runny nose persisted. I read and re-read through your checklist of common mistakes and decided to try plain toothpaste which I never did 3 years ago as my dietician at the time said, 'oh you don't have to give up toothpaste if you don't want to - everything else though' and I never really considered it could cause me such suffering.  Well well well.  A truly amazing change has occurred for me. No more nose blowing at breakfast time or when I'm settling into bed at night. The tap has officially been turned off!   (included on the Rhinitis factsheet because rhinitis can contribute to snoring)