These attacks do not disturb his sleep. Moderate asthma is when these attacks disturb his sleep and occur more frequently. Severe asthmatics are those who face severe breathlessness all through out. The diagnosis of asthma involves proving that there is an airway obstruction and functional disability. For that, a pulmonary function test is done.
Treatment is non-medical and medical.
In the non-medical side, the emphasis is on controlling the environment. The endeavor is on keeping the allergen away from the affected. Effort should be made to have a well-ventilated place. There should be very less humidity. Air-conditioned rooms do not help.