What is the reason for the flesh protruding from the anus during defecation

Many people may have experienced a fleshy protrusion in the anus during bowel movement. This is a problem in the anus. Many people don’t know why there is flesh protruding from the anus during bowel movements. This situation may be caused by hemorrhoids. So in this case, you must pay attention to eating a light diet.

1. Hemorrhoids

The reason why there is flesh protruding from the anus during bowel movements is anal hemorrhoids. Hemorrhoids (commonly known as hemorrhoids) are a common disease located in the anal area. They can occur at any age, but the incidence rate gradually increases with age. In my country, hemorrhoids are the most common anorectal disease, and there is a saying that "nine out of ten men have hemorrhoids" and "ten out of ten women have hemorrhoids". In the United States, the prevalence of hemorrhoids is approximately 5%.

2. Classification

Hemorrhoids are divided into internal hemorrhoids, external hemorrhoids and mixed hemorrhoids according to the location of occurrence. There is a jagged visible line at the junction of the anal canal skin and the rectal mucosa called the anal dentate line. Hemorrhoids above the dentate line are internal hemorrhoids, which are pathological changes or displacements in the supporting structure of the anal cushions, venous plexus and arteriovenous anastomoses, and are covered with rectal mucosa. Due to the contraction of the internal sphincter, the anal cushions are divided into three parts by the Y-shaped groove: the left side, the right front side and the right back side. Therefore, internal hemorrhoids are commonly found on the left side, the right front side and the right back side. External hemorrhoids below the dentate line are covered with the anal canal mucosa, and can be divided into connective tissue external hemorrhoids, varicose external hemorrhoids, and thrombosed external hemorrhoids. Mixed hemorrhoids are both internal and external hemorrhoids, which are the fusion of internal hemorrhoids with the corresponding external hemorrhoids through the venous plexus, that is, the anastomosis of the upper and lower venous plexuses. When mixed hemorrhoids protrude from the anus and are in a plum blossom shape, they are called annular hemorrhoids. If they are incarcerated by the sphincter, they form incarcerated hemorrhoids.

3. Causes

There are two main theories about the cause of hemorrhoids. The first is the varicose vein theory, which holds that hemorrhoids are venous masses formed by congestion, dilation, and tortuosity of the venous plexus under the mucosa of the lower rectum and under the skin of the anal canal. However, the widely accepted theory at present is Thomson's anal cushion migration theory, which holds that hemorrhoids were originally normal anatomical structures in the anal canal, namely the vascular cushion, which is a ring-shaped spongy tissue band 1.5 cm above the dentate line. Only when the anal cushion tissue becomes abnormal and is accompanied by symptoms can it be called hemorrhoids and require treatment. The purpose of treatment is to relieve symptoms rather than eliminate hemorrhoids. There are many factors that cause hemorrhoids, among which constipation, long-term drinking, eating large amounts of irritating foods and sitting or standing for long periods of time are the main causes.