Alopecia Areata: Probing the Deforestation

    January 2011 in “ International Journal of Trichology ”
    Dilip Gude
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    TLDR The document concludes that doctors should recognize congenital triangular alopecia to avoid unnecessary treatments, as it does not respond to steroids like alopecia areata does.
    The document discusses a case of congenital triangular alopecia (CTA), a non-scarring form of hair loss that can be mistaken for alopecia areata (AA), an autoimmune disorder causing hair loss. The case involved a 3-year-old with a persistent patch of hair loss, which had been previously treated as AA with steroids without improvement. The diagnosis of CTA was made based on the patch's characteristics, including its triangular shape and lack of response to treatment. The document emphasizes the importance of distinguishing CTA from AA to avoid unnecessary steroid use, as CTA does not respond to such treatments. It also notes that CTA is often sporadic, may manifest after 2 years of age, and its cause remains unknown. The document highlights the need for clinicians to be familiar with CTA to prevent misdiagnosis and inappropriate treatment. Additionally, the document briefly describes the pathogenesis of AA, mentioning the role of Th1 cells, genetic variants, and potential treatment options. However, the document does not provide specific study numbers or detailed results regarding AA.
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