allergies
"I have debilitating seasonal allergies, to the point where my eyes swell up completely.  Doctors kept saying take zyrtec, take claritin, nasonex, etc.  Nothing made even a dent in the symptoms, even benadryl barely helped.  When I was finally prescribed xyzal it completely changed allergy season for me.  I feel like I have no allergies at all (almost a problem because I forget to take my meds).  Anyone who is miserable during allergy season should seriously consider xyzal."