<unk>  is an electrolyte disturbance whereby there is an abnormally depleted level of the chloride ion in the blood. It rarely occurs in the absence of other abnormalities. If it occurs together with metabolic alkalosis (decreased blood acidity) it is often due to vomiting.  Chloride is a primary anion of the extracellular fluid compartment and aids in maintenance of acid-base balance.
It can be associated with hypoventilation.
It can be associated with chronic respiratory acidosis.
Hypochloremia
Hyposmia
Hypermethioninemia
Hyperammonemia
Hypoglycemia
Hypocalcemia
Hypophosphatemia
Hyponatremia