January 2026 in “Clinical Cosmetic and Investigational Dermatology” This study found that among patients with alopecia areata, 82% reported experiencing at least one significant life event perceived as strainful in the two years before disease onset, suggesting an association between perceived stress and the onset of this condition.
This study found that human hair exhibits significant deformation in its intermediate filaments under strain, with recovery taking about 1000 minutes, suggesting a self-healing period post-mechanical stress. Additionally, cuticle scales deform much less than the cortex, and the Poisson ratio aligns with soft matter properties.
January 2026 in “Dove Medical Press (Taylor and Francis Group)” In this study, researchers observed that patients with alopecia areata reported a high number of personally and familiarly strainful life events before the disease onset, suggesting these events may contribute to the condition's development.
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January 1983 in “Journal of the American Academy of Dermatology” This article proposes a classification system for hair casts to resolve confusion in existing literature and describes a staining technique to distinguish peripilar keratin casts from other hair disorders, without providing new clinical results.
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January 1965 in “Stain Technology” This study describes a double embedding technique for preparing tangential sections of hair and wool fibers, recommending specific staining methods for quantitative analysis and demonstrating wool fiber cortical fractions.