Hi welcome to the health care magic Here your physical examination first should be done to do further investigation Your problem is since long time, so esophageal muscular disorder like achalasia, chronic esophagitis, stenosis etc needs to be ruled out if needed by x ray or endoscopy according to need Your posterior pharynx and nose examined for chronic infection if present that leading post nasal drip and so such problem can occur According to cause further specific treatment given If you have history of acid reflux than such problem also can occur Take care Hence consult physician first examination and accordingly further work up