Hi there, my 21 month old has had a runny nose (changing from clear to green) for going on 6 months now... he isn t sick, has no temperatures and is a happy little man. For the first 7 months of his life he was very congested in the nose and every night I tried everything to aliviate his discomfort (e.g. elevate his matress, use Karvol, saline drops) but that all stopped at around 7 months old. The runny nose is an annoyance more than anything and actually doesn t seem to bother him but I m just worried that he might have adenoid or sinus problems.