<prompt> Which of the following leads to development of SIADH?Head traumaPituitary adenomaLithiumAll of the above  <response>: Causes of SIADH 1. CNS infection 2. Trauma 3. Meningitis 4. Encephalitis 5. Ectopic Ca tumor Option B: Pit Adenoma Prolactinoma increase prolactin, GH Option C: Lithium Causes Nephrogenic diabetic insipidus -Manifestation of SIADH- Dilutional Hypernatremia Treatment of SIADH Vaptan tolvaptan 