Diarrhea, Age 12 and Older - Topic Overview
Diarrhea occurs when there is
an increase in the number of bowel movements or bowel movements are more watery
and loose than normal. When the intestines push stools through the bowel before
the water in the stool can be reabsorbed, diarrhea occurs. It can also occur
when inflammation of the bowel lining causes excess fluid to leak into the
stool. Abdominal cramps, nausea, vomiting, or a fever may occur along with the
Diarrhea is one of the most commonly occurring health
problems affecting all ages. Most adults will have 4 episodes of diarrhea each
year. Diarrhea that comes on suddenly may last up to 14 days.
Diarrhea has many causes.
- Diarrhea is often caused by stomach flu (gastroenteritis) or
food poisoning. Diarrhea is your body's way of quickly
clearing viruses, bacteria, or toxins from the digestive tract. Since most
cases of diarrhea are viral, they will clear up in a few days with good home
E. coli is a common bacteria that causes diarrhea.
E. coli infection is related to improper food
untreated water or unpasteurized dairy products can
cause viral, bacterial, or parasitic infections, such as
Giardia lamblia. Giardia lamblia parasite can cause diarrhea that develops 1 to 4 weeks later.
These infections can also occur when you use untreated water to brush your
teeth, wash your dishes or vegetables, or make ice for drinks.
prescription and nonprescription
medicines can cause diarrhea.
- Antibiotics may cause mild diarrhea that
usually clears up without treatment. A more serious type of diarrhea caused by
the bacteria Clostridium difficile (sometimes called
C-diff) may occur while taking an antibiotic or shortly after finishing the
- Laxatives, such as Correctol, Dulcolax, Ex-Lax, or
Feen-a-Mint, may cause diarrhea.
- Using too much of products that contain sorbitol
(such as chewing gum) or fructose can cause diarrhea.
- Some people
get diarrhea while traveling (traveler's diarrhea).
some people, emotional stress,
irritable bowel syndrome, anxiety, or food digestion
problems (such as
lactose intolerance) cause
- Repeated episodes of diarrhea may be caused by
inflammatory bowel disease.
- Diarrhea may
also be caused by
malabsorption problems and certain types of
- Diarrhea may develop after stomach, bowel, or gallbladder
surgery, or after bariatric surgery for
Many times the exact cause of diarrhea is hard to
determine. Almost everyone has an occasional bout of diarrhea. Although
diarrhea is annoying, most cases are not serious and will clear up with home
Check your symptoms to decide if and
when you should see a doctor.