GERD: Bile taste in back of mouth indicates stomach contents are leaking back up the esophagus. There are too many causes to discuss here. Not sure how migraine relates. Would need more history.
Answered 7/2/2012
5.8k views
Reflux: You could have gastroesophageal reflux causing a erosion of esophagus with referred pain.
Answered 5/12/2013
5.1k views
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