in serum sodium primarily affect
the brain. These effects vary depending on the severity and rapidity of the abnormality and can range all the way from mild weakness, lethargy and confusion all the way to convulsions, coma
and rarely, even death. Most of the effects are reversible when the abnormality in serum sodium is corrected but occasionally, especially in patients with severe hypernatremic dehydration
, small strokes occur that permanently damage the brain.