The low salt syndrome. An extreme example in heart failure.
D006333:Heart Failure; D006801:Humans; D007010:Hyponatremia; D012964:Sodium; D012965:Sodium Chloride / Q000172:deficiency*
D012965:Sodium Chloride; D012964:Sodium
HEART FAILURE, CONGESTIVE; SODIUM CHLORIDE/deficiency