What is the cause of anal fissure

summary

The appearance of anal fissure makes many people very troubled, but there are many factors in life can lead to the occurrence of this disease, long-term constipation, fecal dry knot caused by defecation mechanical trauma is the direct cause of the formation of most anal fissure. The anal tail ligament formed by the superficial part of the external anal sphincter behind the anal canal has poor elasticity and rigidity, and the blood supply in this area is also poor; the anal canal and rectum continue to form an angle, and the pressure on the posterior wall of the anal canal is the largest during defecation, so the posterior midline is vulnerable to damage. The original lesions in the anal canal, such as anal sinusitis, anal papillitis, proctitis, tuberculosis, can cause anal ulcer, forming anal fissure. Recent studies suggest that the increase of internal anal sphincter pressure in the resting period is closely related to the occurrence of anal fissure.

What is the cause of anal fissure

1. Anatomic factors: the superficial part of external anal sphincter, from the coccyx to the posterior part of anus. The anterior and posterior parts of anus are not as firm as the two sides and are easy to be injured. Therefore, the posterior part of the anus is heavily pressed by feces, the blood circulation in the posterior part of the anal canal is insufficient, the elasticity is poor, and there are many anal glands distributed, all of which are the causes of anal fissure. 　　

2. Trauma theory: dry feces or foreign bodies are easy to cause anal skin damage, which is the main factor causing anal fissure. 　　

3. Infection theory: it is mainly the anal crypt infection at the back of anus, and the inflammation spreads to the lower part of anal canal skin, resulting in the rupture of subcutaneous abscess and anal fissure.

matters needing attention

After reading the introduction comprehensively, people have understood the complex causes of anal fissure disease, understood these complex causes, can help people better to avoid inducing factors, and do a good job in the prevention of anal fissure disease. If they have anal fissure disease, they should also do a good job in the treatment according to the etiology of the disease. Don't delay the treatment.