What is a common symptom associated with severe dehydration?

Headaches are a common symptom associated with severe dehydration because, when the body loses a significant amount of fluid, it can lead to a reduction in blood volume and changes in electrolyte balance which negatively impacts brain function. Dehydration reduces the body’s ability to regulate temperature, and it can also cause the brain to temporarily contract away from the skull, leading to pain and discomfort manifested as a headache.

Additionally, dehydration can contribute to other symptoms, such as fatigue, dizziness, and confusion, further indicating its impact on overall health and functioning. In contrast, increased appetite is not typically linked to dehydration; often, people may actually experience reduced hunger. Frequent urination is more commonly associated with adequate hydration or certain medical conditions, while improved coordination is not a symptom of dehydration. Instead, dehydration often compromises physical performance, which negatively affects coordination.