4.A final cause of hypophosphatemia is respiratory alkalosis because it causes extracellular CO2 levels to decrease as it gets ventilated out of the lungs.
5.Most people with mild hypophosphatemia have no symptoms, but severe hypophosphatemia can cause muscle weakness, weak bones or osteomalacia, and rhabdomyolysis which is a type of kidney damage due to muscle breakdown, as well as an altered mental status.