How To Tell the Difference Between Allergies vs. Sinus Infection (Sinusitis)
Allergies can occur at any time of year. While some may be "seasonal," which is when you get them only in the spring or fall, or they may be year-round. Sinusitis, or sinus infections, however, usually happen after you've had a cold or allergies. Some symptoms will linger, even after your cold goes away.