Crohn's Disease Forum » Forum Wiki » Dehydration


Dehydration occurs when your body does not have enough water and other fluids to carry out normal functions. Dehydration is commonly caused by diarrhea, vomiting, fever, or excessive sweating. It is more likely to occur in young children, older adults, and those with chronic illnesses.



Symptoms of dehydration include: tiredness; a dry, sticky mouth; excessive thirst; decreased urine output; dry skin; headache; constipation; dizziness or lightheadedness. Symptoms of severe dehydration may include the above and: lack of sweating; low blood pressure; rapid heartbeat; rapid breathing; irritability and confusion; fever. If severe dehydration is not treated, delirium, unconsciousness, seizures, cerebral edema, hypovolemic shock, and kidney failure may occur.


Dehydration may be diagnosed based on physical signs and symptoms, as well as low blood pressure. Blood tests may be done to check for electrolytes such as sodium and potassium and to check kidney function. A urinalysis can show dehydration and it's severity.


Mild dehydration in adults can be treated with increased fluid intake (primarily water and sports drinks). In severe cases, fluids may be provided intravenously.


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