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Causes of Anal fissure

It is thought that anal fissures are commonly caused by constipation due to passing a large or hard stool, causing stretching and tearing. Tightening of the muscles around the anus may help cause the tear and may slow down the healing process.

 They can also occur after a period of diarrhoea or for no obvious reason. In women about 1 in 10 cases occur during childbirth.

Rarely, anal fissures can be associated with more serious inflammatory bowel conditions. If this is the case, there will be other symptoms and problems as well.

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