Learn how to tell what caused this, prevention tips, and when to see a doctor. Anal Fissure - Diagnosis Patient Comments: Prescription medications for anal fissures. One sign of an anal fissure is pain during or after a bowel movement. Moreover, ultrasound studies that measure the flow of blood showed that the posterior anal canal had less than half of the blood flow of other parts of the canal.
Anal Fissure Information Including Symptoms, Diagnosis, Treatment, Causes, Videos, Forums, and local community support. Find answers to health issues you can trust. Learn about the symptoms and causes of anal fissures, as well as some common causes here. You’ll also learn when it’s necessary to contact a doctor. Fissures are usually caused by trauma to the inner lining of the anus from a bowel movement or other stretching of the anal canal. This can be due to a hard, dry bowel movement or loose, frequent bowel movements. Patients with a tight anal sphincter muscle are more likely to develop anal fissures.