Abstract
Imbalances of electrolytes and water can cause nervous system disorders even though the nervous system regulates fluid and electrolytes to some extent. Some of the more serious neurologic consequences of fluid-electrolyte imbalance are discussed here. Many clinical circumstances predispose patients to dangerous elevation or depression of serum sodium and potassium concentrations. A conspicuous source is imprudent fluid therapy. Restoring balance is far from simple; injudicious dilution or replacement can tip the scale in the other direction.