What type of breathlessness do asthmatic patients experience?

Asthma: Classically the respiratory distress during an asthmatic attack consists of wheezing along with the sensation of breathlessness. There may be a sensation of difficulty getting air in and/or out. A cough may also be present. The patient feels short of breath at rest and very short of breath with exertion. Some attacks consist of a very persistent dry cough without wheezing.

Mainly Inspiratory: or sometimes Expiratory wheezing. Narrowing of air passage can cause poor Air( O2 ) Supply to the blood, therefore Shortness of Breath.

Particular type: difficulty in how fast they can breathe air OUT. Findings on this are decreased expectation of forced volume of air out in 1 second (FEV1). The ratio of time breathing in versus breathing out is not 1:1. There is wheezing at the end of the breath outward.