Which symptom is not associated with hypernatremia?

Hypernatremia, which is characterized by elevated levels of sodium in the blood, leads to various symptoms due to the resultant osmotic imbalance and water movement between compartments in the body.

Thirst is a key symptom, as the body attempts to correct the high sodium levels by promoting fluid intake. Increased sodium causes cellular dehydration, which triggers thirst to help restore the body's fluid balance.

A decreased level of consciousness can also occur due to the effects of hypernatremia on brain cells. High sodium levels can lead to cellular dehydration within the central nervous system, resulting in neurological symptoms including confusion, lethargy, or even seizures.

Oedema, or swelling, is typically not associated with hypernatremia because high sodium levels actually lead to fluid shifts out of cells and because sodium retention generally causes fluid loss from tissues. Instead, hypernatremia typically presents with a relative lack of fluid in the extracellular space, leading to dehydration rather than oedema.

Hypotension, on the other hand, is less commonly related to hypernatremia directly. While changes in fluid status from sodium fluctuations might impact blood pressure, hypernatremia itself does not typically cause hypotension in the same way that hyponatremia might lead to