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Normal dilation of the anus during bowel movements is usually sufficient to pass stool without straining and skin laceration. An excessive dilation of the anus may cause skin laceration around the anal verge.
An excessive dilation of the anus is usually due to constipated stool: this is why constipated people are more frequently prone to suffer from anal rhagades.
The small cut due to anal skin laceration causes mild bleeding: blood may be seen either on the toilet paper or in the toilet bowl. Many people experience this kind of bleeding from time to time (few times a year, on the average).
Blood coming out of these small cuts is usually bright red (fresh blood). When blood is dark red, bleeding may be due to an internal haemorrhage. If this is the case, consult your physician.
Occasional anal bleeding should not give cause for concern: in most cases small skin lacerations heal up spontaneously in a few days like any other wound.


Due to the shape and structure of the anus, as well as to its contraction pattern, when skin lacerations recur several times (even after a few months or years), the skin breaking point is always the same. Sometimes it happens that the laceration cannot heal up, thus forming the so-called rhagas.

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