How to distinguish between anal fissures and hemorrhoids

Written by Yu Xu Chao
Colorectal Surgery
Updated on December 19, 2024
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To distinguish between anal fissures and hemorrhoids, one can first differentiate based on symptoms. Anal fissures primarily cause pain during defecation and minor bleeding, with the pain typically lasting from 20 minutes to half an hour. Patients often have hard stools or constipation. In contrast, hemorrhoids primarily lead to intermittent painless rectal bleeding. The blood is bright red and usually in greater volume, often appearing in a spraying or dripping pattern after defecation. Some patients may also experience prolapsed hemorrhoids, often accompanied by a sensation of heaviness and foreign body in the anus. Further, through a digital rectal examination, an anal fissure can be identified by a palpable ulcer or crack at the posterior or anterior midline of the anus. Hemorrhoids, being soft venous clusters, can also be differentiated through this examination.

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Written by Wang Ji Zhong
Internal Medicine
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Anal fissures occur in which part?

Anal fissures are an extremely common condition in proctology. They occur in the fragile and narrowest tissue of the anal canal due to the combined effect of various internal and external factors, leading to the opening and cracking of the digestive tract outlet up to the dentate line and the surface of the anal margin. The oval-shaped small ulcers that form from anal fissures usually occur at the anal region, aligning parallel to the longitudinal direction of the anal canal. The condition is often recurrent and difficult to heal. The angle continuation between the anal canal and the rectum means that the posterior wall of the anal canal is under the most pressure during bowel movements. Therefore, the posterior midline is most susceptible to injury and is also the most common site for the occurrence of anal fissures.

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Written by Li Xiao Jie
Internal Medicine
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What is the best treatment for anal fissures?

The treatment of anal fissures depends on the specific situation. For initial onset anal fissures, since the fissure is small, treatment can be achieved through methods such as Chinese herbal fumigation or topical application of medicine. For recurrent anal fissures that have persisted for a longer time, fumigation and washing with medicine are less effective. In such cases, surgical treatment is necessary, and it should be sought at the proctology department of a formal hospital. Anal fissures are greatly related to bowel habits, so it is important to maintain smooth bowel movements by, for example, drinking more water, eating more high-fiber foods, consuming less spicy and stimulating foods, abstaining from alcohol, and avoiding greasy foods.

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Written by Chen Tian Jing
Colorectal Surgery
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What should be paid attention to for anal fissures usually?

Patients with anal fissures primarily develop the condition due to a history of dry stools or straining during early bowel movements. Therefore, it is important for patients to ensure smooth bowel movements and avoid excessive dryness of stools. Diet adjustments should include consuming more bland vegetables and fruits, and avoiding spicy foods such as chili peppers, seafood, and mutton, which are irritants. Additionally, ensuring adequate daily water intake is crucial to prevent dryness in the intestinal feces. Besides dietary and bowel adjustments, patients with anal fissures should actively seek medical treatment during acute episodes to prevent the recurrence of early fissures and the formation of chronic fissures. Early-stage fissures may be treated with topical medications to alleviate symptoms, while chronic fissures may require surgical intervention. (Medication should be administered under the guidance of a doctor.)

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Written by Yu Xu Chao
Colorectal Surgery
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The differences between stages one, two, and three of anal fissures.

In clinical practice, anal fissures are not categorized into stages one, two, or three; they are primarily classified as either acute or chronic anal fissures. Acute anal fissures, which occur in the early stages of the condition, are characterized by pain during defecation and minor bleeding. For such cases, the pain usually doesn’t last long, and conservative treatment with medication can be chosen. Topical applications such as dragon's pearl ointment or nitroglycerin ointment are generally used. It is also important to keep the anal region dry and clean, perhaps by using anal washes for sitz baths, while ensuring that the stool is soft to maintain smooth bowel movements. Chronic anal fissures, on the other hand, are mainly due to the development of scars on the ulcer surface. This condition involves prolonged pain and may include some narrowing of the anus. In such cases, surgical excision of the fissure may be necessary. Post-surgery treatment may include changing dressings with medications like red oil gauze strips, golden ointment, and anal washes. (Under the guidance of a doctor for medication use)

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Written by Du Rui Xia
Obstetrics
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Postpartum anal fissure

Postpartum anal fissures are a common symptom during natural childbirth. They occur when there is a tear in the anal area during the delivery of a child. This condition mainly leads to pain in the anal region for women after giving birth, especially during bowel movements. When dealing with postpartum anal fissures, it is important to maintain cleanliness and hygiene in the affected area. Each evening, washing with warm water or a potassium permanganate solution, which has cleansing and anti-inflammatory properties, can effectively alleviate pain in the anal area. Additionally, it is beneficial to consume foods that facilitate bowel movements, such as fresh vegetables and fruits that are rich in dietary fiber, as they can effectively promote gastrointestinal motility and improve constipation.