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July 2021 in “Aesthetic Plastic Surgery” The new triangular flag-shaped design for incisions in hair transplant surgery provides better hair alignment and cosmetic appearance without extra scarring, especially for patients with specific hair directions.
April 2016 in “Journal of the American Academy of Dermatology” A 4-year-old girl had a rare hair disorder affecting only part of her scalp.
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May 2004 in “Facial Plastic Surgery Clinics of North America” Surgeons need to understand natural hair patterns for better hair restoration results.
Polarized microscopy helps identify hair irregularities in genetic disorders.
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January 1994 in “PubMed” Elastic fiber arrangement in mammal skin varies by hair density and body region.
March 2021 in “CRC Press eBooks” The document concludes that different patterns of hair thickness and scalp changes can help diagnose types of non-scarring hair loss.
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March 2018 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Recognizing Jacquet's sign helps diagnose and treat traction alopecia accurately.
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October 2006 in “Current opinion in cell biology” Feather growth and regeneration involve complex patterns, stem cells, and evolutionary insights.
Androgenetic alopecia (AGA) is a common, hereditary hair loss condition that can be slowed but not permanently reversed with available therapies.
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December 2017 in “Small Ruminant Research” Variation in the TCHH gene affects wool curliness in sheep.
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March 2021 in “Frontiers in Medicine” Female pattern hair loss shows similar characteristics in both genders and should be classified by hair loss patterns, not gender.
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November 2017 in “Journal of Investigative Dermatology” AGA linked to inflammation, stress, fibrosis, and disturbed hair follicle stem cells.
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November 2005 in “The Journal of Dermatology” A man's crushed thumb caused unusual horizontal nail ridges on all fingers of one hand.
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November 2018 in “JAAD case reports” Alopecia areata can sometimes appear as a straight line of hair loss instead of round patches.
March 2026 in “bioRxiv (Cold Spring Harbor Laboratory)” Spiny mice have a unique skin structure that helps them heal and regenerate quickly.
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January 2017 in “Springer eBooks” The document explains how hair loss patterns in men and women, known as Androgenetic alopecia, are classified using the Hamilton-Norwood system for men and the Ludwig grade system for women.
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January 2020 in “Frontiers in Genetics” PDGFC gene may help select goats with desirable curly wool traits.
February 2024 in “Clinical and Experimental Dermatology” Men can also experience patterns of hair loss typically seen in women.
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January 2012 in “International Journal of Trichology” A man with Woolly Hair Syndrome had very curly, fragile hair, and doctors used a special scalp examination to diagnose him without invasive tests.
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