Management of Persistent Heightened Sensitivity Following Fissurectomy and Lateral Sphincterotomy

Understanding the Clinical Problem

The American Gastroenterological Association recognizes rectal hypersensitivity as a treatable anorectal sensory disorder that can be addressed through therapeutic interventions, such as biofeedback therapy, which represents the most evidence-based approach to retrain sensory perception and potentially restore more normal sensations in the affected area 1

Biofeedback therapy specifically treats rectal hypersensitivity through sensory adaptation training, which can normalize heightened sensory perception in the affected area, with a demonstrated effectiveness in 70-80% of patients with anorectal sensory disorders 1
The American College of Gastroenterology recommends biofeedback therapy as a primary treatment for persistent heightened sensitivity following fissurectomy and lateral sphincterotomy, as it enhances rectal sensory perception control and can restore more normal sensory thresholds 1

The use of compounded 0.3% nifedipine with 1.5% lidocaine cream applied to the affected area can provide local anesthesia and reduce any residual sphincter hypertonicity that may be contributing to sensitivity, although this is based on guidelines from Praxis Medical Insights, which may not be the primary recommended source 4, 5, 6

Manual anal dilatation is absolutely contraindicated due to 10-30% permanent incontinence rates, as stated by the World Journal of Emergency Surgery 3
Repeat surgical intervention (another sphincterotomy) would likely worsen sensory issues and carries additional incontinence risk, according to Gastroenterology 2, 3

The American College of Gastroenterology recommends requesting referral to a pelvic floor physical therapy center or gastroenterology motility lab that offers anorectal biofeedback therapy, and undergoing anorectal manometry testing to objectively document sensory abnormalities and establish baseline measurements 1