<prompt> Pseudohyponatremia can be seen in -Multiple myelomaDiarrheaVomitingCHF  <response>: Ans. is a i.e., Multipe myeloma Causes of Hyponatremia Pseudohyponatremia Hyperlipidemia Hyperproteinemia multiple myeloma, macroglobulinemia Dilutional Hyperglycemia Hypovolemic hyponatremia : decreased total body sodium with a relatively greater increase in total body water Heart failure Chronic renal failure Hepatic failure or cirrhosis Euvolemic hyponatremia : Increased Total body water with nearly normal total body sodium SIADH Drugs causing DIADH diuretics, barbiturates, carbamazapine, chlopropamide, clofibrate, opioids, tolbutamide, vincristine psychogenic polydipsia Beer potomaria Hypothyroidism Adrenal insufficiency MDMA ecstasy Accidental or intestional water intoxication MDMA, N-methyl-3,4 methylenedioxy amphelamine; SIADH, syndrome of inapproprfate secretion of antidiuretic hormone. Hyperglycemia is retened by some as pseudohyponumia, but hyperglycemia is acrually a dilutional hyperglycemia. 