The cause for<unk>  attacks is still unknown and experts are also unsure of why its developed and why it doesn't respond to typical asthma treatments, although there are some speculations: * Not seeing a doctor regularly, therefore asthma is not under good control * Coming in contact with asthma triggers * Allergies or<unk>  allergic reactions * Not using the peak flow meter and not taking asthma medication as directed by a primary care physician (PCP) correctly * Not following an asthma action plan correctly * respiratory infections *<unk>  stress * cold weather * air pollution * exposure to chemicals and other irritants * smoking
Acute severe asthma
Thunderstorm asthma
Yokkaichi asthma
Cardiac asthma
Brittle asthma
Acute bronchitis
Acute exacerbation of chronic obstructive pulmonary disease
COACH syndrome