Why Does Pelvic Floor Dysfunction Happen? Common Causes Most Women Don’t Know About

The pelvic floor is one of the most consistently overlooked muscle groups in the body — until something goes wrong. It does not get mentioned in gym classes, rarely comes up in routine health conversations, and most women reach adulthood with very little understanding of what it does or how to care for it. Yet the pelvic floor is responsible for some of the most fundamental functions of daily life: bladder and bowel control, support of the pelvic organs, sexual function, and core stability during movement. When it stops working properly, the effects ripple outward in ways that can be deeply disruptive — and deeply isolating.

Pelvic floor dysfunction affects an estimated one in three women at some point during their lifetime, according to research published in Obstetrics and Gynecology. The symptoms span a wide range: urinary leakage during a sneeze or run, the urgent need to reach a bathroom immediately, pelvic heaviness that worsens through the day, pain during intercourse, lower back pain without a clear musculoskeletal cause, or difficulty fully emptying the bladder or bowel. Many women live with these symptoms for years before connecting them to pelvic floor dysfunction — or before they receive a diagnosis that uses that specific term.

At Hackensack CMIGS, Dr. Adam Shoman provides specialist evaluation and care for the full spectrum of pelvic floor conditions, including complex presentations that involve multiple overlapping symptoms or prior treatment that has not produced adequate relief. Understanding what causes pelvic floor dysfunction is the first step toward addressing it effectively — and toward recognising when specialist evaluation is the appropriate next move.

What the Pelvic Floor Actually Does

The pelvic floor is a layered group of muscles, ligaments, and connective tissue that forms a hammock-like structure across the base of the pelvis. It supports the bladder, uterus, and rectum, maintaining their position and function. It works in concert with the deep abdominal muscles, diaphragm, and spinal muscles as part of the core stabilisation system. Voluntary contraction of the pelvic floor allows control over urination and defecation; involuntary coordination maintains continence during activities that generate intra-abdominal pressure, such as coughing, sneezing, or lifting.

Pelvic floor dysfunction occurs when this system is disrupted — either through excessive tension and overactivity (hypertonic dysfunction), insufficient strength or structural support (hypotonic or lax dysfunction), or neurological changes that affect the coordination and signalling between the muscles and the central nervous system. Understanding which type of dysfunction is present is essential because treatment for overactive pelvic floor dysfunction is fundamentally different from treatment for a weak or structurally damaged pelvic floor.

What Causes Weak Pelvic Floor: The Most Common Factors

Childbirth and Vaginal Delivery

Vaginal childbirth is the most common cause of pelvic floor muscle and connective tissue damage in women. During delivery, the levator ani muscle group stretches to accommodate the passage of the baby — often by a factor of three or more times its resting length. In a significant proportion of vaginal deliveries, this stretch exceeds the tissue’s elastic limit, producing micro-tears, macroscopic avulsion injuries (where the muscle detaches from its bony insertion), or damage to the fascial supports that anchor the pelvic organs.

Risk is higher with prolonged second-stage labour, large babies (above 4kg), instrumental delivery using forceps or ventouse, and episiotomy or perineal tearing. Importantly, the damage from a vaginal delivery may not produce symptoms immediately — many women develop significant pelvic floor dysfunction years or decades after childbirth, when the loss of estrogen at menopause removes the hormonal support that had been partially compensating for underlying structural weakness.

Menopause and Estrogen Decline

Estrogen plays a critical role in maintaining the strength, elasticity, and vascularisation of pelvic floor connective tissue and vaginal mucosa. As estrogen levels decline during perimenopause and postmenopause, this tissue becomes thinner, drier, and less resilient — a condition described as genitourinary syndrome of menopause (GSM). The progressive weakening of pelvic floor support in the context of estrogen withdrawal accelerates prolapse progression, worsens existing incontinence, and is frequently associated with new onset of urgency and pain symptoms in women who had no significant pelvic floor issues during their reproductive years.

Chronic Increases in Intra-Abdominal Pressure

The pelvic floor must resist the downward pressure of intra-abdominal forces during any activity that involves breath-holding, straining, or impact. When this pressure is chronically elevated — whether through obesity, chronic constipation and habitual straining at stool, a persistent cough from respiratory conditions or smoking, or occupational or recreational heavy lifting — the cumulative load on the pelvic floor over time leads to progressive muscular fatigue, connective tissue stretching, and eventual dysfunction.

This mechanism explains why pelvic floor dysfunction is not exclusively a condition of women who have had children. It is also seen in nulliparous women who are obese, competitive athletes in high-impact sports, and women with long-standing gastrointestinal conditions that involve chronic straining.

Surgery and Pelvic Trauma

Pelvic surgeries — including hysterectomy, surgeries for pelvic organ prolapse, and procedures involving the bowel or bladder — can affect pelvic floor structure and function through direct tissue disruption, scarring, or changes in the anatomical relationships that the pelvic floor supports. The risk of pelvic floor dysfunction following hysterectomy depends significantly on the surgical approach, the reason for surgery, and whether supporting ligaments are preserved or reconstructed. Post-surgical pelvic floor physiotherapy is an important component of recovery that is still underutilised in many centres.

Neurological Factors

The pelvic floor is innervated primarily by the pudendal nerve and sacral nerve roots. Conditions that affect these nerve pathways — including lumbar disc herniation, sacral nerve root injury during childbirth (pudendal nerve stretch injury), multiple sclerosis, diabetes mellitus with peripheral neuropathy, and certain spinal surgeries — can impair both the motor function (muscle contraction) and sensory function (coordination and feedback) of the pelvic floor. Neurogenic pelvic floor dysfunction is more complex to manage and often requires input from a multidisciplinary team.

Connective Tissue Disorders

Women with heritable connective tissue disorders — including hypermobility spectrum disorders, Ehlers-Danlos syndrome (particularly hypermobile EDS), and Marfan syndrome — have intrinsic laxity of ligaments and fascial structures throughout the body, including those supporting the pelvic organs. This increases the risk of pelvic organ prolapse, joint hypermobility-related pelvic pain, and bladder dysfunction even in young, nulliparous women. Recognition of connective tissue disorder as an underlying factor is important because it changes both the surgical approach and the expectations of long-term durability of repair.

Pelvic Floor Dysfunction After Childbirth: A Closer Look

The postpartum period is when many women first become aware of pelvic floor symptoms — but it is not always when the most significant damage has occurred. Immediate postpartum symptoms including stress incontinence and perineal discomfort are common and often improve significantly with time and pelvic floor rehabilitation. However, levator ani avulsion injuries and fascial defects identified on MRI or ultrasound in the postpartum period do not heal or remodel spontaneously; they represent permanent structural changes that require targeted rehabilitation and, in some cases, eventual surgical repair.

The current evidence — including the New Zealand Pelvic Floor Study and multiple systematic reviews — consistently supports the use of structured pelvic floor muscle training beginning in the early postpartum period to reduce the incidence and severity of long-term pelvic floor dysfunction. Referral to a specialist pelvic floor physiotherapist following any complicated vaginal delivery is now recommended in multiple national gynecology guidelines.

Pelvic Floor Dysfunction vs Prolapse: Understanding the Overlap

Pelvic floor dysfunction and pelvic organ prolapse are related but not synonymous. Prolapse refers specifically to the descent of one or more pelvic organs — the uterus, bladder, or rectum — from their normal anatomical position. Pelvic floor dysfunction is a broader category that includes prolapse but also encompasses urinary incontinence, overactive bladder, pelvic floor hypertonicity, sexual dysfunction related to pelvic floor changes, and pelvic pain syndromes without prolapse.

Many patients with prolapse also have coexisting pelvic floor dysfunction in other domains, and treating prolapse surgically without addressing accompanying pelvic floor weakness or overactivity can produce incomplete outcomes. A thorough specialist evaluation should assess all dimensions of pelvic floor function, not just the structural anatomy of prolapse.

Pelvic Floor Physical Therapy NJ: What It Involves

Pelvic floor physiotherapy is a specialist discipline requiring specific postgraduate training in internal pelvic assessment and rehabilitation. A session with a pelvic floor physiotherapist differs substantially from a standard physiotherapy appointment: it involves an internal vaginal assessment to directly evaluate muscle tone, strength, coordination, and the presence of trigger points or scar tissue, followed by a personalised exercise and treatment program.

For patients in New Jersey, Dr. Shoman’s team at Hackensack CMIGS works collaboratively with experienced pelvic floor physiotherapists to coordinate conservative management as part of a comprehensive care plan. For patients whose dysfunction requires surgical intervention — whether for prolapse repair, incontinence surgery, or other reconstructive procedures — pelvic floor physiotherapy both before and after surgery is integrated into the treatment pathway.

If you are experiencing any symptoms of pelvic floor dysfunction — whether bladder leakage, pelvic pressure, pain, or changes to bowel function — contact Hackensack CMIGS to arrange a consultation with Dr. Shoman. Both the Hoboken and Hasbrouck Heights offices are available for new patients, and an accurate assessment is the starting point for effective treatment.

Conclusion

Pelvic floor dysfunction is not an inevitable consequence of getting older, having children, or being a woman. It has identifiable causes, a clear diagnostic pathway, and a range of effective treatment options. The most common causes — childbirth-related muscle and connective tissue damage, estrogen decline at menopause, and chronic intra-abdominal pressure — are all addressable. Early identification and appropriate treatment, whether conservative or surgical, produces the best long-term outcomes.

The most important thing you can do if you recognise pelvic floor dysfunction symptoms in yourself is to stop accepting them as normal and seek evaluation from a specialist who can assess the full picture — not just one symptom in isolation.

Frequently Asked Questions

What is pelvic floor dysfunction?

Pelvic floor dysfunction is a condition in which the pelvic floor muscles, ligaments, or connective tissues do not function properly, leading to symptoms such as prolapse, incontinence, pelvic pain, or difficulty with bladder and bowel control.

What are the symptoms of pelvic floor dysfunction in women?

Common symptoms of pelvic floor dysfunction include urinary leakage, pelvic pressure or heaviness, bladder or bowel emptying difficulties, pelvic pain, lower back pain, pain during intercourse, and a bulging sensation in the vaginal area.

What causes pelvic floor dysfunction after childbirth?

Pelvic floor dysfunction after childbirth is commonly caused by stretching, tearing, or nerve injury to the pelvic floor muscles and connective tissues during vaginal delivery.

Can pelvic floor dysfunction be cured?

Many cases of pelvic floor dysfunction can improve significantly with pelvic floor physiotherapy, lifestyle changes, and targeted treatment, while more severe structural problems may require surgery.

What is the difference between pelvic floor dysfunction and prolapse?

Pelvic floor dysfunction is a broad term that includes conditions affecting pelvic muscle function, while prolapse specifically refers to the descent of pelvic organs from their normal position.

How is pelvic floor dysfunction diagnosed?

Pelvic floor dysfunction is diagnosed through a medical history review, pelvic examination, and sometimes imaging studies or bladder function tests depending on the symptoms.

Can exercise cause pelvic floor dysfunction?

High-impact exercise and heavy weightlifting can contribute to pelvic floor dysfunction by repeatedly increasing pressure within the abdomen and straining the pelvic floor muscles.

Does pelvic floor dysfunction improve on its own?

Mild pelvic floor dysfunction may improve over time, especially after childbirth, but many cases require active treatment to prevent symptoms from worsening.

Is pelvic floor dysfunction related to lower back pain?

Yes, pelvic floor dysfunction can contribute to lower back pain because the pelvic floor muscles work closely with the core and spinal stabilising muscles.

When should I see a specialist for pelvic floor dysfunction?

You should see a specialist if pelvic floor symptoms are affecting your daily activities, comfort, bladder or bowel function, or overall quality of life.

 

Medical Disclaimer

This content is for educational purposes only and does not constitute medical or therapeutic advice. Pelvic floor dysfunction encompasses a wide range of conditions requiring individualised professional assessment and treatment. If you are experiencing symptoms described in this article, please consult a qualified healthcare professional. Self-diagnosis and self-treatment are not a substitute for formal clinical evaluation.