According to one embodiment of the present invention, an airflow perturbation device for detecting airway sensitivity to temperature comprises a pneumotachometer including a flow sensor to measure airflow through the apparatus a perturbation mechanism to periodically alter air flow resistance in the apparatus an air cooler a pressure sensor to measure a difference in air pressure across the pneumotachometer and perturbation mechanism and a computing system comprising at least one processor configured to receive data from the flow sensor and pressure sensor and determine an airflow resistance based on the received data. Embodiments of the present invention further include a method for detecting airway sensitivity to temperature in substantially the same manners described above.
