Labels:text | screenshot | black OCR: falls into sis (SIAD) The syndrome of inappropriate antidiu is a common cause of hyponatraemia; i cally the category of normovolaemic (i.e. clin emia. normal extracellular volume) hyponatr See later: . Types of Hyponatraemia . Features of SIAD · Causes of SIAD . Types of SIAD Treatment of SIAD