Which of the following is NOT considered an exacerbating factor of asthma

How long is the contagious, paroxysmal stage of pertussis, characterized by a painful whooping cough, leukocytosis and cyanosis?

Post nasal drip, GERD, Vocal Cord Inflammation

Asthma, Sinus Inflammation and Nasal Polyps  

High Fever, Intermittent Cyanosis and Cough

Aspirin Sensitivity, Widespread Rash, High Fever

Peak flow is used for monitoring not diagnosis