Chronic Pelvic Pain

Excerpt

Chronic pelvic pain is a persistent, disabling, or cyclic intermittent pain within the pelvis, most commonly affecting women. Although chronic pelvic pain in men is less prevalent, it exists with a distinct set of overlapping comorbidities. Chronic pelvic pain is often associated with conditions such as irritable bowel syndrome (IBS), major depressive disorder, anxiety, fibromyalgia, chronic central pain syndrome, interstitial cystitis, dyspareunia, and pelvic inflammatory disease. In the United States, 1 in 7 women are affected by this condition. Chronic pelvic pain in men may involve similar comorbidities, in addition to urogenital and erectile pain, retrograde ejaculation, urinary symptoms, sexual dysfunction, and emotional disturbances, although it typically presents from a masculine perspective.

The clinical heterogeneity of chronic pelvic pain and its incompletely understood pathogenesis make treatment challenging. The prevalence of chronic pelvic pain is similar to that of migraine headaches, asthma, and chronic back pain. This condition shares pathophysiological mechanisms, such as central sensitization, with other chronic pain syndromes, including complex regional pain syndrome (CRPS). Diagnosis is typically made after 3 to 6 months of persistent pelvic pain and is largely based on patient history and physical examination. Numerous symptoms or precipitating factors may support the diagnosis. Although imaging and laboratory tests are often inconclusive, they can help identify comorbid conditions that contribute to chronic pelvic pain. Despite evaluation, an estimated 50% of cases remain undiagnosed.

Chronic pelvic pain is a form of centralized pain, where the body develops a lower threshold for discomfort or uncomfortable sensations, often as a result of chronic pain. For example, in women with endometriosis, the acute pain associated with the condition can become centralized over a 3- to 6-month period, evolving into chronic pain. In centralized pain, sensations that were previously mild to moderate may be perceived as severe (hyperalgesia), and even normal touch can be experienced as painful (allodynia). Chronic pelvic pain is strongly associated with prior physical or emotional trauma, supporting the view that its etiology may involve a functional somatic pain syndrome.

The treatment of chronic pelvic pain is often challenging, with limited evidence-based options available. Management typically targets the underlying or suspected etiology, such as comorbid mood disorders, neuropathic pain, or uterine dysfunction. Chronic pelvic pain affects approximately 4% to 16% of women. Given the condition's prevalence, clinicians should maintain a high index of suspicion in patients presenting with chronic pelvic discomfort. Effective treatment requires a coordinated, interprofessional team approach, as collaboration across multiple specialties is crucial for achieving adequate pain relief. Some patients with chronic pelvic pain may benefit from cognitive behavioral therapy (CBT) or hormone replacement, whereas others may require more invasive interventions such as spinal cord stimulation or total hysterectomy.