Sudden (during one night) generalized edema, lasting for 15 years. Very long-lasting stress, digestive problems, constipation, non-stop thirst, dry lips.

Unusual case. It would be helpful to have a complete medical history and lab work up. I would suggest a trial of a medication called spironolactone. If it helps it suggests an etiology. Less stress and getting help for same always helpful. I advise no alcohol use in this context.