Anal fissures are not only fissures in the skin around the anus, but also cracks and openings in the anal canal at the end of the rectum, causing pain and itching, and in severe cases, blood and water may ooze out of the fissures. The symptoms of anal fissures are mainly caused by constipation and prolonged dry stools, which can cause large trauma to the skin around the anus and lead to bacterial infections. So the phenomenon of anal fissure should be treated in time, you can use potassium permanganate lotion to clean the skin around the anus, anti-inflammatory, and then apply some hemorrhoid cream, erythromycin ointment on the affected area for treatment, in addition to some symptoms of hemorrhoids can also cause fissures on the skin around the anus.