Respected user, hi I evaluated your query thoroughly .
* Definite relation with underlying pathology which may be - chronic
gastritis - ulcers of stomach / duodenum - oesophageal disorders as
stricture , tumors - lax oesophageal sphincture -
hiatus hernia - laryngeal
pancreas , liver , peri ampullary disorders - stress & others .
* Diagnostic part involve many parameters as thorough history , physical
examination , indirect
laryngoscopy , upper GI
Endoscopy - biopsy of any
suspicious lesion -
ultrasound of abdomen & pelvis - Barium studies and
CT / MRI in highly selective cases
Hope this clears your query .
Welcome for any further assistance .
Thanks for using Healthcaremagic.com & giving me an opportunity to assist
Wishing you fine recovery from the same .
Regards dear take care .