Dehydration Causes

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Main causes of dehydration are excessive sweating, insufficient drinking, diarrhea, vomiting and excessive urination.
 
Term  
Definition
  1. Excessive sweating
  • Hot ambient
  • Physical work
  1. Insufficient drinking

Water needs:

  • ~1.5 - 2 L for sedentary adults in moderate climates
  • As much as 5 L or more for physically active persons who sweat a lot
  1. Diarrhea
  • Viral gastroenteritis is a major cause of dehydration and death in small children in poor countries.
  • Food poisoning
  • Celiac disease, Crohn's disease
  • Cholera
  • Laxatives abuse
  1. Vomiting
  • Morning nausea in pregnancy (hyperemesis gravidarum)
  • Alcohol intoxication
  • Bulimia
  • Food poisoning
  • Chemotherapy
  1. Excessive urination (polyuria)
  • Diabetes mellitus
  • Diabetes insipidus (kidney or brain disorder)
  • Diuretics
  • Severe adrenal insufficiency (Addison's disease)
  1. Severe bleeding
  • Injury
  • Heavy menstruation
  1. Extensive burns
  • Burnt skin allows perspiration of more water than intact skin.

References: