<unk>  can be mild, moderate, or severe based on how much of the body's fluid is lost or not replenished. When it is severe,<unk>  is a life-threatening emergency<unk>  means your body does not have as much water and fluids as it should.
Dehydration
Third spacing of fluids
Water intoxication
Psychogenic polydipsia
Syndrome of inappropriate antidiuretic hormone
Stress hyperglycemia
Syndrome of inappropriate antidiuretic hormone surgery
Diabetic ketoacidosis