TLDR Trichoscopy helps tell apart Lichen planopilaris and Frontal fibrosing alopecia from other hair loss conditions.
The document discusses trichoscopy of primary cicatricial alopecias, focusing on Lichen planopilaris (LPP) and Frontal fibrosing alopecia (FFA). LPP, a follicular form of lichen planus, mainly affects adults and can cause patchy or diffuse hair loss. Its inflammatory process is folliculocentric, with disease activity signs showing a follicular or perifollicular pattern on the scalp. A unique feature of LPP is the formation of tubular structures, or hair casts, where scaling embraces hair follicles. FFA primarily affects postmenopausal women, characterized by a progressive band of alopecia on the frontal/frontotemporal scalp. Trichoscopy is crucial in differentiating FFA from other hair disorders like alopecia areata, traction alopecia, and androgenetic alopecia. Disease activity signs in FFA are similar to LPP, including perifollicular erythema and scaling.
245 citations
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March 2012 in “Journal of The American Academy of Dermatology” Dermatoscopy is useful for identifying different hair and scalp conditions and can reduce the need for biopsies.
March 2025 in “JEADV Clinical Practice” People with primary scarring alopecia have higher risks of other health issues like vitamin D deficiency and thyroid disease.
23 citations
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April 2018 in “Journal der Deutschen Dermatologischen Gesellschaft” Permanent hair loss from cicatricial alopecia is treated by reducing inflammation and managing symptoms, but regrowth in scarred areas is unlikely.
Clinical signs don't match inflammation levels in lichen planopilaris and frontal fibrosing alopecia.
December 2020 in “Skin appendage disorders” A young man with an unusual type of scarring hair loss suggests a possible new variant of a known scalp condition.
4 citations
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January 2025 in “JAAD reviews.” Janus kinase inhibitors are promising for treating scarring alopecia, but more research is needed for safety and personalized treatments.
July 2025 in “JAAD Case Reports” A thorough assessment and combined treatment are crucial for managing complex alopecia, especially in patients with skin of color.