Shortness of breath is a condition of airway constriction that can be a life-threatening condition if a situation of complete airway obstruction develops. Dyspnoea can have various causes, one of which may be a foreign body lodged in the airways. The shortness of breath may be constant or chronic, or it may occur after intense physical exertion. If you are unable to determine the cause yourself and your symptoms are getting worse, it is necessary to call for medical help.