Factors that are attributed to the occurrence of nocturnal asthma include:
- Cooling of the airways during sleep
- The return of stomach contents into the respiratory tract, which occurs in a few people during sleep
- Changes in the pressure of the muscles around the respiratory tracts that occur with increased contraction of the respiratory tracts at night.
Although the reduction of steroid secretion that occurs naturally at night increases the possibility of nocturnal asthma attacks, but this is not the only cause of nocturnal asthma.
Taking extra steroids at night does not always prevent asthma attacks.
The natural decrease in adrenaline secretion at night can also be attributed to the complexity of asthma symptoms.