Proctalgia fugax
Proctalgia fugax, a variant of levator ani syndrome, is a severe, episodic pain in the regions of the rectum and anus. It can be caused by cramping of the levator ani muscle, particularly in the pubococcygeal part. Signs and symptoms It most often occurs in the middle of the night and lasts from seconds to minutes; pain and aching lasting twenty minutes or longer would likely be diagnosed instead as levator ani syndrome. In a study published in 2007 involving 1809 patients, the attacks occurred in the daytime (33 percent) as well as at night (33 percent) and the average number of attacks was 13. Onset can be in childhood; however, in multiple studies the average age of onset was 45. Many studies showed that women are affected more commonly than men, but this can be at least partly explained by men's reluctance to seek medical advice concerning rectal pain. Data on the number of people affected vary, but prevalence may be as high as 8–18%. It is thought that only 17–20% of patients consult a physician, so obtaining accurate data on occurrence presents a challenge. During an episode, the patient feels spasm-like, sometimes excruciating, pain in the rectum or