September 2023 in “UCrea (University of Cantabria)” Nails are essential for fingertip regeneration.
January 1997 in “Elsevier eBooks” Hair and nails are skin parts that develop early and serve protective and functional roles.
October 2019 in “Skin appendage disorders” The vitreous membrane in hair follicles changes shape during the hair cycle and may affect hair growth and nutrient exchange.
February 2022 in “Authorea (Authorea)” PAON shows skin patterns due to genetic mosaicism.
September 2009 in “Medical and surgical dermatology/Medical & surgical dermatology” 3 citations
,
July 2019 in “Fibers And Polymers/Fibers and polymers”
Hair and nail disorders can harm self-esteem, but early treatment helps.
8 citations
,
February 1968 in “Australian Journal of Zoology” The southern elephant seal's skin layer helps waterproof the skin by being tightly connected to hair shafts.
Recognizing bamboo hair helps diagnose Netherton’s syndrome.
84 citations
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October 2005 in “Annals of Clinical Psychiatry” Hairpulling, skin picking, and nail biting cause significant harm and need more research for better treatments.
19 citations
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January 2018 Most people with alopecia areata have nail changes, which are common but don't greatly affect their quality of life.
January 1997 in “Han-guk hyeonmigyeong hakoeji/Applied microscopy” The hair follicle's connection to connective tissue is weaker than the skin's.
January 2016 in “Skin appendage disorders” The document discusses various nail and hair disorders and their treatments.
18 citations
,
November 2007 in “Acta Veterinaria Hungarica” The ovine interdigital sinus has a complex structure with three layers and various skin-like features.
9 citations
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June 2017 in “Journal of Cutaneous Pathology” People with pemphigus vulgaris and pemphigus foliaceus often have smaller sebaceous glands on their scalp.
January 1999 in “대한피부과학회지” Trichotillomania is more common in young females and often linked to stress and psychiatric conditions, with hair loss and increased catagen hair observed.
7 citations
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May 1995 in “The journal of investigative dermatology/Journal of investigative dermatology” 45 citations
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January 2018 in “International Journal of Dermatology” Nail problems are common in people with alopecia areata, often leading to cosmetic and functional issues, but more research is needed for treatment guidelines.
15 citations
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July 2004 in “Journal of morphology” Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.
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.
June 2025 in “British Journal of Dermatology” Nail abnormalities in children can indicate deeper health issues.
7 citations
,
January 2017 in “Sub-cellular biochemistry/Subcellular biochemistry” 13 citations
,
April 2009 in “Journal der Deutschen Dermatologischen Gesellschaft” Nail disorders not caused by infection are common and can look similar, with psoriasis being the most frequent and having specific nail symptoms.
6 citations
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October 1998 in “PubMed” Antifungal treatment can improve severe skin infections with cutaneous horns.
2 citations
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January 2007 in “Actas Dermo-Sifiliográficas” Two cases of hairy elbows syndrome were described, with normal skin texture and symmetrical hair growth.
June 2026 in “Advanced Science” New cryomicroneedles can improve hair growth and regeneration.
4 citations
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April 2012 in “The journal of investigative dermatology/Journal of investigative dermatology” Krt16-deficient mice help understand skin disorders like PC and FNEPPK.
5 citations
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October 2020 in “Experimental dermatology” A specific type of skin cell creates an opening for hair to grow out, and problems with this process can lead to skin conditions.
13 citations
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December 1983 in “Canadian journal of zoology” Heterotypic cell contacts likely help hair matrix cells differentiate during mouse hair follicle development.