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[Actinic lichen planus: 32 cases]

S Bouassida1, S Boudaya, H Turki

  • 1Service de Dermatologie, CHU Hédi Chaker.

Annales De Dermatologie Et De Venereologie
|September 25, 1998
PubMed
Summary
This summary is machine-generated.

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Actinic lichen planus (ALP) is a sun-induced skin condition. This study found ALP has a low incidence, affects younger individuals, and is more common in females, with the annular form being most specific.

Area of Science:

  • Dermatology
  • Epidemiology
  • Clinical Pathology

Context:

  • Actinic lichen planus (ALP) is a variant of lichen planus affecting sun-exposed skin.
  • It typically occurs in children and young adults with darker skin tones in tropical regions.
  • Described forms include annular, pigmented, and dyschromic.

Purpose:

  • To investigate the epidemiological, anatomical, and clinical characteristics of actinic lichen planus in a specific region.
  • To compare findings with existing literature on ALP.

Summary:

  • A retrospective study analyzed 32 patients with clinically and histologically confirmed ALP.
  • Key data collected included geographical origin, age, sex, phototype, and clinical/histological features.
  • Results indicated a low incidence (1/million/year), a mean age of 17 years, female predominance (2.5:1), and frequent facial involvement (91%).

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  • The annular form was predominant (84%), while histology showed typical ALP in 18 cases and lichen planus in 14.

    • Impact:

    • This study highlights a lower incidence and younger patient demographic for ALP than previously reported.
    • It suggests the annular form is most specific to ALP.
    • The pigmented form requires careful differential diagnosis with melasma.
    • Specific histological findings are noted as highly suggestive of ALP.