Continence Coach: Pelvic Floor Pain Syndrome in Chronic Pelvic Pain

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Author(s): 
Nancy Muller, PhD, MBA

  In the genitourinary world, chronic pelvic pain (CPP) is one of the most complex and difficult conditions to diagnose and treat. The pain is rarely limited to one organ; it often involves multiple systems and is further complicated by the subjectivity of pain and individual variation in pain tolerance. Definitions of the condition vary. The American College of Obstetricians and Gynecologists1 defines CPP as “noncyclic pain of at least 6 months’ duration that localizes to the anatomic pelvis, lumbosacral back, buttocks, or anterior abdominal wall at or below the umbilicus and that is severe enough to cause functional disability or lead to medical care.” Although CPP is typically attributed to a pathologic process in peripheral (somatic or visceral) as opposed to central systems of the body, it is not known whether some permanent central nervous system dysfunction or psychogenic mechanism is at work. This is especially true in cases of trauma to the pelvic region and with respect to the body’s cumulative inflammatory response. More research about causal factors is needed to improve diagnostic accuracy and thus treatment.2 Today’s clinician must approach patient symptoms via differential diagnosis, systematically comparing clinical findings.

  CPP is believed to be more common than is generally recognized or documented. A UK study3 of nearly 300,000 women ages 12 to 70 years found a prevalence of 38.3 per 1,000. However, pain due to chronic inflammatory bowel diseases or pain that occurred only during menstruation or sexual intercourse was excluded, so many think these findings are greatly underestimated. A US Gallup® study4 found 16% of women ages 18 to 50 years self-reported CPP. Several other surveys estimate much higher prevalence but do not constitute level-A evidence. About one fifth of diagnoses are considered gynecological; cyclical endometriosis is the number one causal disorder or associated condition.5

  Pelvic floor pain syndrome, a musculoskeletal system disorder also referred to as pelvic tension myalgia or levator ani syndrome, is a noncyclical condition. It is described as spasms induced by stressed pelvic floor muscles (the levator ani muscles that support pelvic viscera, the coccygeus muscle that aids in raising and supporting the pelvic floor, and the piriformis muscle that rotates the thigh laterally). Symptoms may include CPP, including pain in the perineum, vagina, or buttocks and down the back of the leg not unlike sciatica; dyspareunia; pain during intercourse; inability to fully empty the bowels; and urinary frequency with urgency. Causes include past trauma such as rape, interstitial cystitis, chronic constipation, vulvodynia, untreated urinary tract infections, and trauma and damage to the pelvic floor muscles during labor and vaginal delivery. The syndrome often is accompanied by irritable bowel syndrome, endometriosis, and vulvar vestibulitis. Although most patients are women, clinicians should remember men have pelvic floor muscles and therefore may experience this syndrome (and thus CPP) for nonobstetrical reasons.

  Pelvic floor pain syndrome treatment involves behavioral therapy techniques and technologies. A specially trained physical therapist typically addresses neuromuscular re-education of the pelvic floor muscles using computerized feedback to reduce the spasms and pain, not unlike bladder retraining used to address classic symptoms of overactive bladder, including urgency and frequency. Transcutaneous electrical nerve stimulation may be used, as well as manual therapies using a lubricant and dilator to stretch the stressed, tense muscles. A patient’s sexual partner may be invited to assist in therapy. On her own, a patient is encouraged to perform breathing exercises to relax and perform pelvic floor muscle exercises at home to supplement clinic protocol.



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