| ADH | Antidiuretic Hormone |
| CSW | Cerebral Salt Wasting |
| DI | Diabetes Insipidus |
| GI | Gastrointestinal |
| HPA | Hypothalamus-Pituitary-Adrenal |
| PSH | Paroxysmal Sympathetic Hyperactivity |
| SIADH | Syndrome of Inappropriate Anti-Diuretic Hormone secretion |
| TBI | Traumatic Brain Injury |