What is the definition of dehydration?

Dehydration is defined as a condition that occurs when water output exceeds water intake. This means that the body loses more fluids than it is taking in, which can lead to an imbalance of essential electrolytes and impair normal bodily functions. When the body does not receive enough water, various systems can be affected, leading to symptoms such as thirst, dry mouth, fatigue, and in severe cases, serious health complications. Understanding this definition is crucial, especially in caregiving contexts, where monitoring fluid intake and ensuring adequate hydration in individuals, particularly those with conditions like dementia, is essential for their overall health and well-being.