| http://www.w3.org/ns/prov#value | - Being sensitive to pain, children may avoid the toilet if they have minor splits or tears in the anus from straining or other irritations.Older people, especially those who are more sedentary, tend to develop constipation more often as well.Some medications can also cause constipation, including narcotic-type pain killers such as codeine, iron supplements and some medicines us
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