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Also known as: fissure-in-ano
A tear in the anal lining causing severe pain during and after defecation, often with a little bright-red bleeding — commonly from passing a hard stool. Most are in the posterior midline; a sphincter-spasm cycle keeps them from healing.
Constipation/hard stool, but also diarrhoea and childbirth; atypical (lateral or multiple) fissures suggest Crohn's, infection or malignancy.
Heal the fissure (relax the sphincter)
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🚩 Report outdated / suggest update