My eyes at times get very dry and itchy, as well as sometimes feel like there's pressure behind them. My nasal membranes also dry up at times. These symptoms seem the worst during changes of season, so I've always assumed that its allergies. That said, most people that I know who have allergies complain more about runny noses, sneezing, etc., which doesn't seem to happen much with me.
So, can someone confirm that this is indeed allergies and not something else?