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As water retention increases, weight gain may also occur. [1] More severe symptoms include pulmonary edema and hyponatremic encephalopathy. [5] Symptoms of hyponatremic encephalopathy are associated with an altered level of consciousness and can include sullenness, sleepiness, withdrawing from social interaction, photophobia, and seizures. [4]
Hyponatremia or hyponatraemia is a low concentration of sodium in the blood. [4] It is generally defined as a sodium concentration of less than 135 mmol/L (135 mEq/L ), with severe hyponatremia being below 120 mEq/L. [ 3 ] [ 8 ] Symptoms can be absent, mild or severe.
Hyponatraemia, causing headache, muscular weakness, twitching, confusion, vomiting, irritability etc., although this is only seen in 20–30% of cases. [4] Hypervolemia, leading to oedema, hypertension and weight gain (due to the kidneys being unable to filter the excess blood) [5] in extreme episodes; Tonic-clonic seizure [6]
Electrolyte imbalance, or water-electrolyte imbalance, is an abnormality in the concentration of electrolytes in the body. Electrolytes play a vital role in maintaining homeostasis in the body.
In 1953, Leaf et al., demonstrated that exogenous administration of the antidiuretic hormone vasopressin resulted in hyponatremia and a natriuresis dependent on water retention and weight gain. This was not "salt wasting"; it was a physiologic response to an expanded intravascular volume.
Hypoosmolar hyponatremia is a condition where hyponatremia is associated with a low plasma osmolality. [1] The term "hypotonic hyponatremia" is also sometimes used.[2]When the plasma osmolarity is low, the extracellular fluid volume status may be in one of three states: low volume, normal volume, or high volume.
Children with diarrhea who drink mostly water or overly dilute drinks with too little salt may develop hyponatraemia (serum sodium less than 130 mmol/liter). This is especially common in children with shigellosis and in severely malnourished children with edema.
Tea and toast syndrome is a form of malnutrition commonly experienced by elderly people who cannot prepare meals and tend to themselves. The term is not intrinsic to tea or bread products only; rather, it describes limited dietary patterns that lead to reduced calories resulting in a deficiency of vitamins and other nutrients.