What causes anal pain after defecation?

Defecation may be followed by anal pain, which is generally caused by factors such as improper diet, hemorrhoids, perianal abscess, anal fissure, or anal sinusitis. It is recommended to seek medical attention promptly, identify the underlying cause, and receive symptomatic treatment under the guidance of a qualified physician. Specific analysis is as follows:

1. Improper diet: Consuming excessive spicy or irritating foods or heavy alcohol intake may irritate the anal mucosa, leading to anal pain after defecation. A light diet and abstinence from alcohol are recommended to help alleviate discomfort.

2. Hemorrhoids: This condition may be related to poor bowel habits or chronic diarrhea. During defecation, excessive straining or friction from stool may cause anal pain, often accompanied by bleeding and itching. Patients are advised to use medications such as Ma Yinglong Musk Hemorrhoid Ointment, Huaijiao Pills, or Huazhi Tablets according to medical instructions to relieve symptoms.

3. Perianal abscess: Caused by infection due to blockage of anal glands, a perianal abscess typically presents with local swelling and dull pain. Symptoms may worsen after defecation due to pressure. Patients should follow medical advice in using medications such as Cefaclor Capsules, Jinhuan Ointment, or Compound Jingjie Lotion for improvement.

4. Anal fissure: Often associated with constipation or diarrhea, patients may pass dry, hard stools, which can cause tears or damage to the anal canal, resulting in pain and bleeding during defecation. It is recommended that patients use Xiongdan Hemorrhoid Ointment, Longzhu Ointment, or Nitroglycerin Ointment as directed by a physician to alleviate symptoms.

5. Anal sinusitis: This refers to inflammatory changes in the anal crypts located at the dentate line of the anus. Under inflammatory stimulation, patients may experience anal pain after bowel movements, often accompanied by a sensation of heaviness or fullness. Patients should use medications such as Metronidazole Tablets, Erythromycin Ointment, or Gangtai Suppositories under medical supervision to improve symptoms.

In daily life, it is recommended to maintain perianal hygiene—for example, washing with warm water after bowel movements—and to eat a light, easily digestible diet. Avoid spicy and irritating foods such as chili peppers and hot pot.