5 citations
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October 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” This study identified a high-risk allele in the PLCD1 gene associated with hereditary trichilemmal cyst formation, proposing a monoallelic two-hit mechanism as the underlying genetic pathogenesis.
4 citations
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January 2014 in “Indian dermatology online journal” This article discusses the genetic hair disorder monilethrix, characterized by beaded, fragile hair due to defective keratin genes, and reports no effective treatment currently available; variability in severity was noted among affected siblings.
13 citations
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January 2012 in “Dermatology” This case study and literature review describe eruptive vellus hair cysts as uncommon, potentially inherited or acquired lesions, associated with other skin conditions, and challenging to treat despite being benign.
September 2025 in “Journal of Ayurveda and Integrated Medical Sciences” This study described trichilemmal cysts, firm lumps that form from blocked hair follicles, typically found on the scalp but also less commonly on other body parts, affecting less than 10% of the population and possibly inherited as an autosomal dominant trait.
January 1974 in “Nippon Nōgei Kagakukaishi/Nihon Nougei Kagakkaishi” In this study, L-methionine and L-serine application was observed to have the most significant effect on hair weight and root length, followed by acetyl L-methionine and L-serine, while glutathione inhibited growth.