What causes pain and swelling on the left side of the anus?

The health of the anus is very sensitive to people, because the anus has to go through the process of defecation every day, so it is easy to be affected by the dirt in the body and become sick. The tissue of the anus is very weak. If it encounters inflammation, it will often be damaged and bleed. Some people will have lumps in the anus. Let’s take a look at what’s going on if there is a lump and pain on the left side of the anus? I hope everyone can understand something.

Anal swelling, pain and pus discharge often cause inconvenience to daily life and work, and if not handled properly, it may lead to the development of the disease. Anal swelling and pain is one of the common symptoms of anorectal disease, which mainly refers to swelling and pain around the anus, accompanied by purulent secretions. It is common in perianal suppurative infection, perianal cyst, external hemorrhoid inflammation, infection after anorectal disease surgery and cancerous lesions.

(1) The main symptoms of perianal suppurative infection are local redness, swelling and severe pain. The disease develops rapidly and pus forms in 3-5 days. The pus is thick, foul-smelling and yellow in color. Severe cases may be accompanied by difficulty in defecation and urination, restlessness and persistent high fever. Coughing and breathing may even cause severe pain. In another group of patients, the disease progresses slowly, with thin pus containing bean curd-like substances and potential latent cavities. It must be pointed out that most patients with this disease are prone to develop para-anal fistulas over time.

(2) Perianal inflammatory cysts are mostly caused by obstruction of the perianal sebaceous glands, which lead to the accumulation of sebum secretions, and then secondary infection caused by swelling and pain. The swelling and pain of this disease are limited in range, and the pus is in the form of tofu dregs. During surgery, the cyst wall tissue must be thoroughly removed, otherwise it is very easy to recur.

(3) External hemorrhoid inflammation is a common disease. It is mainly because the patient is not treated in time and does not take proper rest after suffering from external hemorrhoids. The friction and irritation of the affected area causes infection, pain, pus discharge, etc.

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1. Perianal suppurative infection: This disease is the most common, accounting for more than 70%. It is caused by tissue damage and infection in the anal crypts and perianal area, leading to the expansion of inflammation. Most patients with this disease are prone to develop paraanal fistulas over time.

2. Perianal inflammatory cysts: They are mostly caused by obstruction of the perianal sebaceous glands, which leads to stagnation of the secreted sebum, resulting in secondary infection of the swelling and pain. The swelling and pain of this disease are limited in range, and the pus is in the form of bean curd dregs. During surgery, the cyst wall tissue must be thoroughly removed, otherwise it is easy to recur.

3. External hemorrhoid inflammation: This disease is more common, mainly because after suffering from external hemorrhoids, the patient is not treated in time and does not pay attention to proper rest. The friction and irritation of the affected area causes infection, pain, pus discharge, etc.