The causes of hypovolemia can be characterized into two categories: Kidney * Loss of body sodium and consequent intravascular water (due to impaired reabsorption of salt and water in the tubules of the kidneys) * Osmotic diuresis: the increase in urine production due to an excess of osmotic (namely glucose and urea) load in the tubules of the kidneys * Overuse of pharmacologic diuretics * Impaired response to hormones controlling salt and water balance (see mineralocorticoids) * Impaired kidney function due to tubular injury or other diseases Other * Loss of bodily fluids due to: * Gastrointestinal losses; e.g. vomiting and diarrhea * Skin losses; e.g. excessive sweating and burns * Respiratory losses; e.g. hyperventilation (breathing fast) * Build up of fluid in empty spaces (third spaces) of the body due to: * Acute pancreatitis * Intestinal obstruction * Increase in vascular permeability *<unk>  * Loss of blood (external or internal bleeding or blood donation)
complications of Hypoalbuminemia
complications of Acute liver failure
complications of Kidney disease
complications of Hemolytic–uremic syndrome
complications of HELLP syndrome
medical cause of Hyperphosphatemia
complications of Rhabdomyolysis
complications of Vasculitis