Before the assertion, that the respiratory ailments of a patient have something to do with the spine, certainly a classical medical examination must happen, to exclude serious illnesses like f.e. a severe heart disease or changes at the lungs like f.e. a big emphysema, silicosis etc., which can release a respiratory disturbance.
If there are no severe diseases, which can lead to respiratory disturbances, you will find the cause, also for a bronchial asthma, in damages at the spine.
At the bronchial asthma these are the vertebrae of the functional circuit lung (Th3 SMT®), large intestine (L1 SMT® and L2 SMT®), nose and mouth (C4). The mouth (C4) is the body orifice to the functional circuit stomach (Th6 SMT®)/ spleen-pancreas (Th8 SMT® and Th7 SMT®)/ mouth and nose (C4), so that damages at the vertebrae, spinal nerves and organs of this functional circuit also are important for the arising of a bronchial asthma and other respiratory disturbances.
As a proof for the statement, that bronchial asthma and other respiratory disturbances in the end are released by damages at the spine, may count that asthmatic attacks arise especially often during the night. However, also stress situations can cause an asthmatic attack. Why? As soon as more muscle tension develops in the body, may be due to a lack of motion, like it is basically the case during the night, or when there are stress situations, where the psychic tension increases the muscle tension, and with it the degree of the scoliosis, due to the shortening of the tensed up muscles, which causes more nervous irritations. The organs, in this case the lung, reacts with a limited respiratory action or, in the case of a bronchial asthma, with an asthmatic attack.
More information can be obtained in my textbook about the SMT ® "Nearly everything is possible" (Up to now only in German language)".