Spring is here.
There are several clues. Secondly, there are certain symptoms that are more likely due to allergies than to cold viruses. Although runny nose, congestion, sore throat and cough are common to both, itchy, sandy eyes, throat itching and long volleys of sneezing are more characteristic of allergies. Cold symptoms that last more than a week or two are generally due to allergies. Then, of course, there is your environment.