It is possible to get cough variant asthma suddenly, but most of the disease is chronic and recurrent. Cough variant asthma is a specific type of asthma that can be caused by genetics, allergies, and other factors; it can develop suddenly in response to certain triggers, such as a sudden onset of coughing after inhaling an allergen. Therefore, sometimes the disease may first develop suddenly without a history of recurrent coughing. Cough variant asthma, however, is more often characterized by a chronic cough, which may worsen intermittently, rather than having an acute onset. In summary, most cases of cough variant asthma are characterized by a chronic cough, and the sudden onset of the disease can only be diagnosed when other disorders have been fully excluded.