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[0] Nocturnal Asthma [2] Temperature changes in the body Allergen exposure in the bedroom Gastro esophageal reflux disease (GERD) Low circulation of adrenal gland hormones Delayed reactions to allergens exposed to during the day [3] Nocturnal asthma occurs in as many as 75% of asthma patients. [1] 
Also known as sleep-related asthma, this type of asthma occurs when a person is sleeping regardless of the time of day. However, symptoms worsen between midnight and 4 a.m.
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