Anal fissure is one of the common diseases in anorectology, especially in young women. Is this because women are prone to constipation caused by picky eating? Or is it related to the special physiology of women? Married women are prone to anal fissures mainly because of childbirth, while unmarried women are also prone to anal fissures because of the special period of menstruation. Let’s take a look at why women are prone to anal fissures. We often find that the number of young women suffering from anal fissures is much higher than that of men. It is generally believed that this is due to constipation during pregnancy or excessive force during childbirth, causing tears in the perineum and anal canal. Some unmarried young women are also prone to anal fissures, especially during menstruation, which is related to the fact that young women do not pay attention to rest and hygiene during menstruation, which can easily cause anal inflammation. Anal fissures are small ulcers that form when the skin layer of the anal canal under the dentate line is cracked, mostly seen in young adults. Constipation and dry stools are the direct causes of anal fissures. The clinical manifestations of anal fissures are pain, constipation and bleeding. The pain is typically cyclical: painful defecation – intermittent relief – severe pain again. Patients are reluctant to defecate for fear of pain causing constipation, and dry stools aggravate the fissure, forming a vicious cycle. A small amount of bleeding may occur during defecation, but heavy bleeding is less common. Anal fissures can be easily confused with anal canal ulcers, perianal abscesses, syphilis, and soft chancre. Why are women prone to anal fissures? Women’s vulnerability to anal fissures has a lot to do with their special physiology. The main causes of anal fissures in women are the following: 1. constipation. Women are more likely to be picky in their diet than men, which can easily lead to irregular bowel movements, and most have a history of constipation. Dry, hard fecal masses and constipation are both the cause and the result of anal fissures, which are mutually beneficial and form a vicious circle. 2. Special period. Some unmarried women are also more likely to suffer from anal fissures, especially during the menstrual period is more likely to aggravate the anal fissure condition. Most of the menstrual period is not well rested and pay attention to menstrual hygiene, causing local inflammation of the anus, resulting in anal fissure. 3, local infection. Compared to men, women are better “static” and not good “moving”, especially young women, after pregnancy is correspondingly reduced activity, thus causing the intestinal peristalsis is weakened, very easy to produce constipation. After constipation, dry and hard feces easily abrade the skin of the anal canal causing local infection, which is very likely to cause anal fissures. 4, childbirth. Women often overexert themselves during childbirth, causing the perineum of the anal canal to tear, causing pain and bleeding, resulting in anal fissures.