4 citations
,
January 1981 in “PubMed” Hair medullary cells in mammals vary in complexity, with humans having more structured cells similar to inner root sheath cells.
50 citations
,
March 2001 in “Clinics in dermatology” Human hair is complex and grows in cycles starting from embryonic life.
6 citations
,
December 2011 in “Clinical and Experimental Dermatology” A woman developed rare, unexplained curly hair on her scalp and eyelashes.
2 citations
,
June 2001 in “Medical Electron Microscopy” Trichilemmal cysts may form from hair follicle outer root sheath growth.
13 citations
,
July 1973 in “Archives of dermatology” Tight cornrow braids may cause hair loss.
10 citations
,
November 2013 in “Biochemistry and Molecular Biology Education” Keratins are crucial proteins for hair and nails, with a structure that helps teach protein principles.
16 citations
,
April 2017 in “ACM Transactions on Graphics” Light scatters differently from elliptical hair fibers than from circular ones, and a new model better predicts this behavior, especially for shiny highlights.
49 citations
,
June 2004 in “Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences” Human hair becomes weaker and stretches more easily at higher temperatures.
42 citations
,
July 2015 in “PLoS ONE” The study revealed the detailed structure of a keratin dimer, aiding understanding of how intermediate filament proteins function.
January 2022 in “Clinical Cases in Dermatology” A woman's scalp nodule was a common, harmless pilar cyst, treated by surgical removal.
3 citations
,
May 1991 in “Journal of Investigative Dermatology”
5 citations
,
January 2014 in “Journal of Cutaneous and Aesthetic Surgery” A woman had 13 non-cancerous cysts on her scalp successfully removed in one surgery.
7 citations
,
January 1990
January 2012 in “International Journal of Trichology” Two siblings have a rare genetic condition causing curly, coarse hair.
90 citations
,
January 1979 in “International review of cytology” Wool follicles are complex, involving interactions between different cell types and structures.
5 citations
,
January 2010 in “The anatomical record” Most dogs have hair whorls on their chest and limbs, with shelter dogs and short-haired dogs having more chest whorls.
2 citations
,
September 2002 in “Dermatologic Surgery” Each group of hair follicles on the scalp shares one muscle that helps control hair movement.
April 2017 in “Journal of Dermatological Science” Asymmetric hair follicle differentiation causes the unique shape of kinky hair.
22 citations
,
January 2006 in “Journal of Structural Biology” Hair follicles form hard α-keratin filaments in four steps, showing structural differences.
9 citations
,
January 1980 in “Dermatology” Hair casts may be caused by repetitive hair pulling or styling and are often misdiagnosed.
62 citations
,
February 2016 in “ACS Applied Materials & Interfaces” Technique creates 3D cell spheroids for hair-follicle regeneration.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Developing hair follicles form from ring-shaped patterns, with future stem cells originating from the outer ring, not the upper layers, as previously thought.
4 citations
,
January 2017 in “International journal of trichology” Castor oil can cause severe hair matting.
21 citations
,
September 1968 in “Cancer” Citrulline in certain skin tumors suggests they mimic hair growth, helping distinguish them from other cancer types.
December 2023 in “Animal research and one health” Certain circular RNAs are crucial for wool growth and curvature in goats.
February 2013 in “Journal of the American Academy of Dermatology” Uncombable hair syndrome causes dry, frizzy hair that can't be combed flat, seen in a young child.
4 citations
,
January 1991 in “Dermatology” Hair casts are small structures on hair shafts with unknown causes.
March 2026 in “Dermatology Online Journal” Cystic panfolliculoma is a rare, harmless tumor that can be confused with other skin tumors.
Benign tumors from hair follicles can look like other skin cancers but have distinct features under dermoscopy.