(CBS) If you’re from a Western country, there’s a 10-20 percent chance that you suffer from classic symptoms of acid reflux: chronic heartburn and/or acid regurgitation.
But if you don’t have those classic symptoms you may still have acid bubbling up from the stomach into the esophagus, a condition called “gastro-esophageal reflux disease” (GERD). Over the past decade, research has suggested that acid reflux can cause atypical symptoms such as cough, hoarseness, sore throat, asthma, and even chronic sinusitis. GERD can also cause chest pain, especially if the acid causes the muscle in the esophagus to go into spasm.
http://www.cbsnews.com/stories/2009/09/24/health/cbsdoc/main5335730.shtml