March 2020 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” The dermal sheath's contraction is crucial for hair follicle regression and stem cell relocation.
The nail immune system is similar to hair but different from skin, with fewer immune markers.
March 2025 in “International Journal of Trichology” Trichodaganomania involves biting one's hair and needs combined psychological and medical treatment.
87 citations
,
November 2002 in “Journal of Investigative Dermatology”
A runner developed tangled armpit hairs from shirt friction, preventable by shaving or wearing smooth shirts.
130 citations
,
February 2005 in “Proceedings of the National Academy of Sciences” Corneal cells can transform into skin and hair cells through specific signals.
81 citations
,
January 1987 in “Current topics in developmental biology/Current Topics in Developmental Biology” Keratins change and are modified differently in skin layers and body parts.
24 citations
,
June 2003 in “Journal of Structural Biology” Sheet formation is key to macrofibril structure differences in wool.
25 citations
,
January 2004 in “The International Journal of Developmental Biology” Research on skin disorders in humans and mice has improved understanding of hair and skin development.
November 2009 in “Medical and Surgical Dermatology” October 2015 in “Cosmetic Dermatology” Hair is complex, varies in type, and plays a big role in attractiveness and culture.
3 citations
,
July 2019 in “Fibers And Polymers/Fibers and polymers”
January 1994 in “Nihon Chikusan Gakkaiho” Collagen fibrils in mink skin change structure during hair growth, becoming looser and thicker in the active phase.
January 2024 in “International Journal of Advanced Research” Topical 6% salicylic acid effectively reduced skin plaques in a patient with wooly hair and palmoplantar keratoderma.
Spiny keratoderma is a rare skin condition with small spines on palms and soles, possibly linked to abnormal hair formation.
1 citations
,
October 1978 in “The Journal of Pediatrics” January 2023 in “Journal of Veterinary and Animal Sciences” Dogs with skin lesions often have blood abnormalities and damaged hair.
April 2017 in “Journal of Investigative Dermatology” Sweat glands and hair follicles are determined by opposing signals, with BMPs promoting sweat glands and blocking BMPs leading to hair follicles.
139 citations
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October 2005 in “Journal of Investigative Dermatology” The nail matrix has a reduced immune response, protecting it from autoimmunity.
1 citations
,
January 1989 Four antibodies were developed to help study hair follicle cell differentiation.
1 citations
,
December 2020 The skin is the body's largest organ, with layers, cells, and structures that protect and support it.
March 1990 in “Journal of Dermatological Science”
Sensory neuron remodeling and Merkel-cell changes happen independently during skin maintenance.
22 citations
,
February 2008 in “Journal of Dermatological Science” EPR spectroscopy showed that spontaneous hair growth results in thicker skin and less pigmented hair than depilation-induced growth.
July 2019 in “Indian dermatology online journal” Alopecia areata can show unusual red-dotted vessels and dithranol treatment may mask typical patterns.
September 2022 in “JAAD case reports” The man has a genetic skin condition called pachyonychia congenita.
28 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” 198 citations
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November 1989 in “The Journal of Cell Biology” Keratin K14 expression varies between hair follicles and epidermis, affecting cell differentiation.
36 citations
,
December 1991 in “Journal of Dermatological Science” Human nails contain both skin and hair keratins, each needing different extraction methods.
2 citations
,
June 2001 in “Medical Electron Microscopy” Trichilemmal cysts may form from hair follicle outer root sheath growth.