When the infections are cleared up both daytime and nighttime symptoms will improve. Body temperature can drop by as much as 2.1 degrees while you are asleep. This could be another trigger for nighttime induced asthma. It has been proven in daytime asthma that a decrease in the temperature of the body can bring about broncospasms. You can stop these effects from taking place by breathing warm humidified air.
Sleep apnea can occur in people with asthma.
This is an obstructive upper airway disturbance. It will then trigger other mechanisms that will cause asthma of the lower airways. Reflux of gastric acid into the esophagus can also be a trigger to boncospasms. However, there had been not direct link between esophageal reflux and nocturnal asthma. Most people with daytime asthma will have a worsening of symptoms during the night.