Anal pain during bowel movements

Defecation is a normal metabolic activity of the human body. If you experience anal pain during defecation, you must take it seriously and go to the hospital for examination and treatment. Because anal pain is likely caused by anal diseases such as anal sinusitis, anal fissure, anal abscess, etc. If it is not treated in time and the condition worsens, the consequences will be absolutely disastrous!

1. Anal sinusitis

The anal sinus is located at the dentate line of the anal canal, between the bases of two adjacent anal columns. It is shaped like a half moon, with an upward opening, concave like a pocket, and 3 to 5 mm deep. There is an opening for the anal glands at its base. Anal sinusitis, also known as anal cryptitis, refers to the inflammatory lesions of the anal crypts in the dentate line of the anus. Anal sinusitis often causes anal infectious diseases such as perianal abscess.

Due to the special anatomical morphology of the anal sinus, feces are easily accumulated in the anal sinus or it is blocked by secretions, causing infection and inflammation. In addition, dietary factors may also cause anal sinusitis, such as fried and spicy foods, seafood, etc.

2. Anal fissure

Anus is the anal canal, and fissure is a crack. Anal fissure (the surface of the narrowest part of the anal canal tissue from the dentate line to the anal margin at the outlet of the digestive tract) forms a small ulcer parallel to the longitudinal axis of the anal canal, fusiform or oval, about 0.5 to 1.0 cm long, and often causes severe pain around the anus. The most common site of anal fissure is the front and back center of the anus, mostly the front center. The incidence of anal fissure accounts for about 20% of anorectal diseases, mostly in young people, but anal fissure is more common in women, especially young women.

The incidence rate in women in my country is about 1.8 times that of men, while the result reported in the Journal of the Japanese Society of Colon and Anorectal Surgery is 1.6 times. Anal fissures can be divided into acute and chronic. Chronic anal fissures, due to their long course and repeated attacks, cause edema of the anal flap and anal papilla at the upper end of the fissure, resulting in hypertrophy of the anal papilla, and the skin at the lower end drooping in a bag-like shape and protruding outside the anus, forming "sentinel piles". Anal fissures, sentinel piles, and hypertrophy of anal papillae often exist at the same time, which is called the anal fissure triad.

3. Anal abscess

An acute suppurative infection occurs in the anal canal, the soft tissue around the rectum, or in the surrounding spaces, and an abscess forms, which is called an anorectal abscess. Anal fistula often forms when an abscess ruptures or after surgical incision and drainage. It is a common anorectal disease. Common pathogens include Escherichia coli, Staphylococcus aureus, Streptococcus and Pseudomonas aeruginosa, occasionally anaerobic bacteria and Mycobacterium tuberculosis, and often mixed infections with multiple pathogens. Subcutaneous abscesses around the anus are the most common, and are mostly caused by anal gland infection spreading outward through the subcutaneous part of the external sphincter or directly outward.