Diarrhea (DIE-uh-REE-uh), also spelled diarrhoea, happens when the body makes more watery feces than normal. In a baby it is the most common symptom of malnutrition. This means not eating enough, or well enough. Diarrhea can occur in humans as well as most other mammals.
In developing nations, malnutrition is a common cause of child death. Part of the deaths from malnutrition are caused by diarrhea. Another way diarrhea can kill you is by dehydration. Because diarrhea is watery in nature, it takes up a lot of the water in your body. Diarrhea is often treated with aspirin or glucose - these reduce pain and may stop some symptoms for a while. However, if it was because of malnutrition, it will not save the child's life. Spending money on rehydrating salts, clean water, and more food is the most direct way to cure diarrhea from malnutrition.