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Gastric asthma: a clinical update for the general practitioner.

Asthma is an inflammatory disease of the airways characterized by increased airway reactivity with airflow obstruction. It is exacerbated by multiple triggers, and one common, often overlooked trigger is gastroesophageal reflux (GER). The prevalence of GER in asthmatics is estimated at between 34% and 80%. Up to 24% of asthmatics may have silent GER without the classic reflux symptoms (heartburn, acid regurgitation, and dysphagia). Since most patients are initially seen at the primary care level, it is essential for the primary physicians to recognize the underlying cause of the disease. This review briefly discusses the pathogenesis and clinical features of gastric (reflux-triggered) asthma and provides clues for its diagnosis in primary care practice. The current diagnostic approach to such patients and its management relevant to general practitioners is also discussed.