Ds (aged 2) has has a runny nose since the spring and just wondered if this is normal or whether I should take him to drs. At first I put it down to teething but don't think it's this anymore. Thought it might be an allergy although not sure what to and have given him Piriton but it makes no difference. It just doesn't stop running and although there doesn't appear to be anything else wrong with him it seems a long time to have a runny nose for.