What causes asthma symptoms to worsen at night?
1. Introduction Asthma symptoms worsening at night, clinically referred to as nocturnal asthma, are primarily driven by the body’s natural circadian rhythm, which induces a drop in circulating cortisol and epinephrine while increasing parasympathetic vagal tone. These synchronized physiological changes naturally constrict the bronchial airways and promote mucosal inflammation during sleep. When this baseline nocturnal … Read more