Jan 3, - Information about causes of rectal pain such as anal fissures, moderate discomfort, while anal fissures can cause a tearing or knife-like sharp pain. . The muscles may feel tight, and touching them can reproduce the pain.Definition of and Facts · What Causes Rectal Pain? · What Causes Rectal Pain. The most common symptom is that you feel a continuing urge to have a bowel movement. You may have minor symptoms such as tenderness in the anal region and mild irritation of the rectum. More serious symptoms may occur, such as pus and blood in discharge accompanied by severe cramps and pain during bowel movements.What Is Proctitis? · What Are the Symptoms of · How Is Proctitis Diagnosed?