GERD: Are functional heartburn and functional dyspepsia one disorder? (Nature Clinical Practice Gastroenterology & Hepatology)

The characteristics of functional heartburn remain poorly understood. Savarino et al. have now demonstrated that functional heartburn has more in common with functional dyspepsia than with nonerosive reflux disease. This study suggests that there is substantial overlap between functional heartburn and functional dyspepsia, and possibly that these two disorders may actually be one functional esophagogastric disorder.