i have it. I am currently on Singulair and Allegra. Also taking albuterol, Serevent. I have had bronchitis like symptoms for like 3 months. Nothing cured me. I was on 9 different prescriptions at one time. No doctor ever did give me an actual diagnosis. 90% of the people in the world that claim to have asthma are full of shit. They get tired after excercise from being out of shape "must be asthma". Finally taking Colloial Silver through my nebulizer trying to cure myself. Seems to be working.