Table. Typical clinical manifestations and possible triggering factors for asthma and VCD.

	Asthma	VCD
Development	Often rapidly(minutes)	Mostly hyperacute (seconds)
Duration	Individually variable	Seconds to a few minutes
Dyspnea during	Expiration	Inspiration (rarely expiration)
Localization	Thorax/lower respiratory tract	Neck/upper respiratory tract
Drugs	Highly effective	Ineffective
Triggers	Irritants, allergens, stress, exertion	Irritants, stress, exertion, (allergens?)
Cough	Trigger, accompanying	Trigger, accompanying