Dehydration occurs when the output of fluids exceeds intake, leaving the body with insufficient water for routine functions.  Chronic dehydration is associated with circulatory disorders, electrolyte imbalance, seizures, permanent brain damage, renal and cardiac complications; and/or death. Symptoms include: dry mouth, itchy & dry skin, sunken eyes, inability to produce tears, dizziness, weakness, darkening of urine or decreased urine output, fatigue and/or elevated pulse rate. In eating disorders this arises from fluid restriction, purging through use of laxatives, vomiting and/or diuretics, or excessive exercise combined with inadequate hydration. 

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