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Fibrosing alopecia in a pattern distribution and cicatricial pattern hair loss are poorly recognized diffuse variants of lichen planopilaris (LPP).
The medical features of 40 patients affected by a diffuse hair thinning associated with a long-lasting history of pruritus and erythema of the scalp and a histopathologic diagnosis of LPP were reviewed.
Clinical data, results of trichoscopy and histopathology, response to treatment, and follow-up were analyzed.
There were 18 patients diagnosed with fibrosing alopecia in pattern distribution and 2 patients with cicatricial pattern hair loss. A new variant of diffuse LPP, named “lichen planopilaris diffuse pattern,” was described in 20 individuals.
Low number of cases due to rarity of the diseases.
In patients complaining of a long-lasting history of scalp erythema, itching/dysesthesia, and diffuse hair thinning, it is advisable to consider diffuse variants of LPP.Le texte complet de cet article est disponible en PDF.
Key words : cicatricial alopecia, fibrosing alopecia, fibrosing alopecia in pattern distribution, histopathology, lichen planopilaris, scalp itching, trichoscopy
Abbreviations used : CPHL, FAPD, LPP, LPPD
| Funding sources: None.
| Conflicts of interest: None disclosed.
| IRB approval status: This study did not require Institutional Review Board approval.
| Reprints not available from the authors.