Relationship Between Hemorrhoids and Pelvic Floor Disorders

Pathophysiological Connection

Hemorrhoids consist of connective tissue cushions surrounding arteriovenous communications in the anal canal, contributing approximately 15-20% of resting anal pressure and serving as a conformable plug to ensure complete closure of the anal canal 1, 2
The pathogenesis of enlarged, prolapsing hemorrhoidal cushions involves abnormal swelling of anal cushions, stretching of suspensory muscles, and dilation of the submucosal arteriovenous plexus 2
Multiple studies have shown elevated anal resting pressure in patients with hemorrhoids compared to controls, which may affect pelvic floor muscle function 2
Chronic straining during defecation, a common factor in hemorrhoid development, also contributes to pelvic floor dysfunction by increasing stress on pelvic floor muscles and fascia 2, 3

Advanced age is a common risk factor for both hemorrhoids and pelvic floor disorders 3
Pregnancy and vaginal childbirth are common risk factors for both hemorrhoids and pelvic floor disorders 2
Chronic straining is a common risk factor for both hemorrhoids and pelvic floor disorders 2, 3
Conditions that result in chronic increased intra-abdominal pressure are common risk factors for both hemorrhoids and pelvic floor disorders 2, 3

A careful anorectal evaluation is warranted for patients reporting hemorrhoids, as symptoms caused by other conditions are frequently misattributed to hemorrhoids 1
When pelvic floor dysfunction is suspected, global assessment of all pelvic compartments may be necessary using radiologic tests such as fluoroscopy, MRI, and ultrasound 3
Focused clinical diagnostic tests such as urodynamic studies for urinary incontinence and anal manometry for defecatory dysfunction may be necessary 3

Avoiding straining during defecation is a conservative measure for managing hemorrhoids 2
Proper toilet posture with buttock support, foot support, and comfortable hip abduction may help manage hemorrhoids and pelvic floor disorders 4
Pelvic floor physiotherapy should be considered as first-line treatment for patients with pelvic floor dysfunction, which may also benefit those with hemorrhoids 4
Aggressive management of constipation is crucial for both conditions and should be maintained long-term 4

Pain is generally not associated with hemorrhoids unless thrombosis has occurred; anal pain suggests other pathology and mandates closer investigation 1
Pelvic floor abnormalities often involve multiple compartments, requiring comprehensive assessment 4
Constipation management is crucial and often discontinued too early; treatment may need to be maintained for many months 4