What is the diagnosis and treatment for Pilonidal sinus (Pilonidal disease)?

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Last updated: February 10, 2025View editorial policy

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From the Guidelines

Pilonidal sinus diagnosis involves identifying a recurrent abscess or cyst at the base of the spine or buttocks area, and treatment typically involves drainage and antibiotics.

Diagnosis

  • A diagnosis of Pilonidal sinus is considered when a patient presents with a recurrent abscess at the base of the spine or buttocks area, which may be associated with a pilonidal cyst 1.
  • The presence of a recurrent abscess at a site of previous infection should prompt a search for local causes such as a pilonidal cyst 1.

Treatment

  • Treatment of Pilonidal sinus typically involves drainage of the abscess and culture of the abscess to guide antibiotic therapy 1.
  • A 5- to 10-day course of an antibiotic active against the pathogen isolated may be prescribed to treat the infection 1.
  • It is essential to drain recurrent abscesses early in the course of infection and consider further evaluation and treatment to prevent future recurrences 1.

From the Research

Diagnosis of Pilonidal Sinus

  • Pilonidal disease is a chronic acquired condition that can cause significant morbidity and substantial burden to patients' quality of life 2, 3, 4
  • The condition can range from a routine cyst with abscess to extensive chronic infection and sinus formation 4
  • Diagnosis is often based on clinical presentation and evaluation of the patient's symptoms and medical history 5

Treatment Options for Pilonidal Sinus

  • Treatment options for pilonidal disease vary considerably in their level of invasiveness, associated morbidity and disability, risks of complications, and effectiveness at preventing disease recurrence 5
  • Conservative nonoperative management strategies include improved hygiene, depilation, and lifestyle modification, and focus on disease prevention and minimization of disease activity 5
  • Epilation techniques using laser and intense pulse light therapy are also used as primary and adjunct treatment modalities 5
  • Other nonoperative treatment modalities include phenol and fibrin injection to promote closure of pilonidal sinuses 5
  • Operative management strategies include excision of affected tissue paired with various closure types, such as primary midline closure, primary off-midline closure techniques, and healing by secondary intention 5
  • Minimally invasive operative approaches, including sinusectomy and endoscopic approaches, have also been developed 3, 5

Minimally Invasive Treatment Options

  • Video Assisted-Ablation of Pilonidal Sinus (VAAPS) and Endoscopic Pilonidal Sinus Treatment (EPiST) are minimally invasive treatment options that have shown promising results 3
  • These treatments aim to reduce morbidity and recurrence rates, and have been shown to have comparable short-term results to established treatments 3
  • However, long-term outcomes data from further prospective randomized trials is needed to establish the efficacy of these treatments compared to traditional surgical methods 3

Challenges in Treatment

  • The management of pilonidal disease must strike a balance between recurrence and surgical morbidity 2
  • The ideal treatment for pilonidal disease would be simple, cost-effective, cause minimal pain, have a limited hospital stay, low recurrence rate, and require minimal time off from school or work 2
  • However, the current evidence supporting different treatment options is limited by study quality, and there is a need for standardization of definitions used to characterize pilonidal disease and its outcomes to develop evidence-based treatment algorithms 5

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Management of pilonidal disease.

Current opinion in pediatrics, 2018

Research

Evaluation and management of pilonidal disease.

The Surgical clinics of North America, 2010

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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