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 sinus disease is a chronic acquired condition leading to significant morbidity and associated healthcare costs 2
  • The pathomechanism of pilonidal sinus disease has still not been conclusively clarified, but it is assumed that the hair in the natal cleft contributes significantly to the formation 3
  • The disease often has a significant impact on the quality of life of the affected person, and the treatment may be complex and needs to be adapted to the patient's needs 3

Treatment Options for Pilonidal Sinus

  • Several techniques have been described to manage pilonidal disease, with no treatment gaining universal acceptance 2
  • Treatment options include:
    • Wide excision with or without primary closure 4, 2
    • Various flap closures, such as Karydakis flap, Limberg flap, and Bascom cleft lift 5
    • Less invasive surgical techniques, such as sinusectomy and endoscopic approaches 4, 2, 5
    • Conservative nonoperative management strategies, including improved hygiene, depilation, and lifestyle modification 5
    • Epilation techniques using laser and intense pulse light therapy 5
    • Phenol and fibrin injection to promote closure of pilonidal sinuses 5

Considerations for Treatment

  • The management of pilonidal disease must strike a balance between recurrence and surgical morbidity 4
  • The ideal treatment for pilonidal disease would be simple and cost-effective, cause minimal pain, have a limited hospital stay, low recurrence rate, and require minimal time off from school or work 4
  • Treatment of pilonidal disease requires patient-oriented therapy planning, and the patient must be taught the different treatment options and a treatment recommendation must be given to the patient 3
  • 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

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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