Kidney disease also increases your risk, as do medications that increase urination. Having uncontrolled or untreated diabetes puts you at high risk of dehydration. Older adults also may have mobility problems that limit their ability to obtain water for themselves. These problems are compounded by chronic illnesses such as diabetes and dementia, and by the use of certain medications. As you age, your body's fluid reserve becomes smaller, your ability to conserve water is reduced and your thirst sense becomes less acute. Young children often can't tell you that they're thirsty, nor can they get a drink for themselves. Having a higher surface area to volume area, they also lose a higher proportion of their fluids from a high fever or burns. The most likely group to experience severe diarrhea and vomiting, infants and children are especially vulnerable to dehydration. Certain medications, such as diuretics and some blood pressure medications, also can lead to dehydration, generally because they cause you to urinate more.Īnyone can become dehydrated, but certain people are at greater risk: This may be due to undiagnosed or uncontrolled diabetes. Hot, humid weather increases the amount you sweat and the amount of fluid you lose. If you do vigorous activity and don't replace fluids as you go along, you can become dehydrated. The problem worsens if you have a fever in addition to diarrhea and vomiting. In general, the higher your fever, the more dehydrated you may become. If you have vomiting along with diarrhea, you lose even more fluids and minerals. Severe, acute diarrhea - that is, diarrhea that comes on suddenly and violently - can cause a tremendous loss of water and electrolytes in a short amount of time. Sometimes dehydration occurs for simple reasons: You don't drink enough because you're sick or busy, or because you lack access to safe drinking water when you're traveling, hiking or camping.
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