i ve been using glucocorticoid nasal spray for a few weeks now, and am still having severe allergy issues. benadryl and chlortrimetron (sp?) do nothing for them, and i ve been taking psuedophedrine too, but even though it makes me groggy (opposite reaction than most people, i know), i m barely sleeping. help

Summarized question: What causes severe sinus allergy despite taking Glucocorticoid nasal spray?