- Use of corticosteroids, defined as: Intranasal corticosteroid within four weeks prior to Visit 1 and during the treatment period. Inhaled, oral, intramuscular, intravenous, ocular, and/or dermatological corticosteroid (with the exception of hydrocortisone cream/ointment, 1% or less) within eight weeks prior to Visit 1 and during the treatment period.