65 citations
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December 2000 in “PubMed” The biology of skin and hair is complex and not fully understood.
1 citations
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March 2019 in “Dermatologic Surgery” 1 citations
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August 2024 in “Pediatric Dermatology” A rare, harmless hair condition was found in an infant's eyebrow, needing no treatment.
24 citations
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July 2015 in “Biogeosciences” A fungus is essential for forming and shaping hair ice on dead wood.
April 2025 in “Dermatology Practical & Conceptual” UV-enhanced trichoscopy helps diagnose hair shaft disorders like pili annulati.
14 citations
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May 1979 in “International Journal of Dermatology” Trichostasis spinulosa mainly affects the nose, with many tiny hairs in one follicle, possibly influenced by hormones and sunlight.
6 citations
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October 2009 in “Veterinary Dermatology” Canine claws have complex structures with different keratin types, similar to hair and nails.
96 citations
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December 1995 in “Journal of Investigative Dermatology” 19 citations
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February 2013 in “Journal of Investigative Dermatology” Touch domes in human skin are complex sensory structures not directly linked to hair.
Pangolin scales evolved for protection, hardening with age, due to keratin gene diversification.