You may wonder if diarrhea is contagious or not. The problem is some cases are contagious, but others are not. Because this is such an ambiguous situation, it's best to practice very high levels of sanitation procedures around people who have diarrhea.
Most cases of diarrhea are not contagious. If you have diarrhea that is attributed to anxiety, excitement or a food intolerance, you are not contagious. However, if you have contracted a virus, parasite or bacteria that is causing the diarrhea, you may pass the virus, parasite or bacteria on to someone else.
The transfer of such a virus, parasite or bacteria usually happens because of improper sanitation. This can happen because of improper hand washing after changing diapers or using the restroom. It can also happen after an accident in a pool or when picnicking outside where you may come in contact with animal scat without knowing it.
Proper hand washing is essential for prevention of diarrhea in these cases. You will want to use warm soapy water and to wash for the length of the "Happy Birthday" song. Make sure you either air-dry or towel-dry your hands with a sanitary towel.
If you can't conduct proper hand washing, use hand sanitizer. Make sure you coat all surfaces of your hands with the sanitizer, rub, and allow to dry completely before eating or preparing food.
There is no diarrhea cure for certain types of diarrhea, such as Crohn's disease, Celiac's disease or Irritable Bowel Syndrome, but these are conditions which are not contagious. You can modify your diet and lifestyle to reduce your incidences of diarrhea for your own comfort and dignity, but you do not have to worry about passing these conditions to someone else. Food intolerances are also not contagious.
There are several causes of diarrhea, most of which are avoidable.
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