Bartter Syndrome is a rare congenital disease that manifests as hypokalemia, hyponatremia and hypotension. The disease occurs due to defective genes that are responsible for the reabsorption of certain electrolytes in the renal tubules. Hence it results in salt–wasting dyselectrolytemia. By its inheritable nature, the usual presentation of the disease is in the infants and children. But this case report presents an adult with symptoms of Bartter Syndrome which was discovered by chance while the patient was being treated for Acute gastroenteritis. Adult onset of Bartter Syndrome is incredibly rare and has been reported only in few other cases