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What is severe dehydration?

True, severe dehydration, defined as a 10% to 15% loss of total body water, is a medical emergency. It can present in many ways, including increased thirst. However, some people do not experience this; the person can become agitated or very sleepy or confused, have a very dry mouth or skin, be urinating very little or not at all, or have low blood pressure or a fast heart rate or sunken eyes and shriveled skin.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.