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Hirudotherapy, or leech therapy, may trigger lichen planus, a chronic inflammatory condition. This case report highlights a potential link between leech application and the onset of lichen planus in a patient, suggesting further investigation.

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Area of Science:

  • Dermatology
  • Immunology
  • Integrative Medicine

Background:

  • Lichen planus is a chronic inflammatory autoimmune disease affecting skin and mucous membranes.
  • Hirudotherapy (leech therapy) is FDA-approved for specific surgical applications, such as flap viability.
  • The Koebner phenomenon describes the appearance of skin lesions at sites of trauma.

Observation:

  • A 34-year-old male presented with symptoms of lichen planus, including oral plaques and skin rash.
  • The patient had undergone hirudotherapy a week prior for knee and leg pain.
  • The rash appeared on his legs and back, consistent with a potential Koebner response.

Findings:

  • Histopathological examination confirmed features of lichen planus.
  • The patient's condition developed shortly after leech therapy application.
  • No other causative factors like drug use were identified.

Implications:

  • This case suggests a potential, previously unreported, association between hirudotherapy and the induction of lichen planus.
  • Physicians should consider hirudotherapy as a potential trigger for lichen planus and similar dermatoses.
  • Further research is warranted to elucidate the mechanism linking leech therapy and lichen planus development.