​Differential diagnosis of hypertonic sodium gain causing hypernatremia

​Differential diagnosis of  hypertonic sodium gain causing hypernatremia
-nephrogenic diabetic insipidus due to demeclocycline, lithium, interstitial nephritis, prolonged urinary tract infection, hypokalemia, congenital hypercalcemia 
-central diabetes insipidus due to head trauma, idiopathic, CNS mass
- primary hyperaldosteronism (hypernatremia usually mild and asymptomatic 
-hypertonic intravenous fluids, enemas, tube feeds,
-salt intoxication ( rare)