allergic rhinitis
"My doctor prescribed xyzal after my regular allergy medicine became ineffective and I was continually getting sinus infections over a couple month span.  I couldn't figure out why I was still showing allergy symptoms and continuing to get sinus infections while taking xyzal.  I decided to stop taking the medication after reading some side effects included sinus pressure, stuffy nose, and cough.  Within a few days of stopping the medication, my symptoms disappeared.  I found it interesting that some of side effects I experienced was the reason I began taking this prescription in the first place."