Skip to content
My WebMD Sign In, Sign Up

Mild, Moderate, or Severe Diarrhea

Font Size

Topic Overview

Diarrhea is described as an increase in the frequency of bowel movements or a decrease in the consistency of stools that causes the discharge of watery, loose stools. The severity of diarrhea is determined by the size and number of stools passed within a period of time.

  • Severe diarrhea means having more than 10 loose, watery stools in a single day (24 hours).
  • Moderate diarrhea means having more than a few but not more than 10 diarrhea stools in a day.
  • Mild diarrhea means having a few diarrhea stools in a day.

Severe diarrhea has many causes. Stomach flu (gastroenteritis) or food poisoning may cause severe diarrhea. Drinking untreated water that contains the Giardia lamblia parasite can cause diarrhea that develops 1 to 4 weeks later.

Recommended Related to Digestive Disorders

Crohn's Disease: 54 Tips to Help You Manage

Crohn's disease, an inflammatory bowel disease affecting 500,000 Americans, can overwhelm your daily life. Day-to-day living is especially difficult if you suffer chronic symptoms like frequent diarrhea, gastrointestinal bleeding, anal tears, or bowel obstructions. Fortunately, treatments for Crohn's disease can make a big difference. Effective treatments range from lifestyle changes to medications, or even surgery in severe cases. The right treatments can reduce symptoms, lengthen remissions,...

Read the Crohn's Disease: 54 Tips to Help You Manage article > >

Severe diarrhea increases your risk of dehydration by causing your body to lose large amounts of fluid quickly. Be sure to increase your intake of fluids, such as water or a rehydration drink, and to watch for symptoms of dehydration.

Persistent diarrhea can have many causes, including dietary changes, stress, irritable bowel syndrome, and certain medicines. Occasionally, persistent diarrhea can be a symptom of a more serious condition, such as a chronic infection, inflammatory bowel disease, a malabsorption syndrome, or colorectal cancer.

1

WebMD Medical Reference from Healthwise

Last Updated: February 21, 2012
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
Next Article:

Mild, Moderate, or Severe Diarrhea Topics

Hot Topics

WebMD Video: Now Playing

Click here to wach video: Dirty Truth About Hand Washing

Which sex is the worst about washing up? Why is it so important? We’ve got the dirty truth on how and when to wash your hands.

Click here to watch video: Dirty Truth About Hand Washing

Popular Slideshows & Tools on WebMD

hands on abdomen
Can you catch one?
Woman sitting in front of UV lights
Is yours working?
woman using breath spray
What's causing yours?
womans hand on abdomen
Are you ready for baby?
MS Overview
Recognizing symptoms.
bowl of yogurt with heart shape
Eat for a healthy heart.
woman doing pushups
To help you get fit.
Colored x-ray of tooth decay
Know what to look for.
Woman sitting with child
Do you know the symptoms?
mosquito
Stings, bites, burns, and more.
Allentown, PA
Are you living in one?
Thyroid exam
See how much you know.

Women's Health Newsletter

Find out what women really need.