December 2019 in “Ukrainian Journal of Veterinary and Agricultural Sciences” Donkey and horse hair have different microscopic structures, which can help tell them apart.
2 citations
,
May 2020 in “Journal of the American Academy of Dermatology” Hair shaft changes may be linked to CCCA, but their role is unclear.
1 citations
,
October 2015 in “OakTrust (Texas A&M University Libraries)” Harp seals have different innervation patterns in their whiskers, with lateral whiskers having more axons than medial ones.
12 citations
,
March 2011 in “Journal of pathology” Oncogenic K-ras causes rapid cancerous changes in the mouth's lining.
A white-tailed deer fawn in South Dakota was the first cervid found with congenital hypotrichosis, a condition causing sparse or missing hair.
14 citations
,
March 2000 in “Journal of Zoo and Wildlife Medicine” A new type of mite caused hair loss in a koala, which was treated successfully with ivermectin.
6 citations
,
January 2025 in “Differentiation” WNT10A is important for tissue development and linked to various human disorders.
11 citations
,
August 2010 in “Developmental neurobiology” Ptprq has multiple forms that change during inner ear development.
A 16-year-old girl with gum overgrowth and excessive hair growth had successful gum surgery and healed well.
36 citations
,
January 1994 in “Cell and Tissue Research” January 2006 in “Elsevier eBooks” Most vertebrates can regenerate skin, nails, and corneas, but only some can regenerate teeth and lenses.
5 citations
,
January 2009 in “International Journal of Trichology” Two siblings had a rare hair condition with banded hair, which doesn't need treatment.
4 citations
,
June 2014 in “The Journal of Dermatology” Elkonyxis, a rare nail condition, improved when patients stopped their nail-picking habits.
April 2026 in “Research Square” Improving manual dexterity is key to better dental skills, while self-confidence doesn't predict actual performance.
May 2026 in “Frontiers in Medicine” The patient's hair improved after treatment, but the genetic link is unclear.
11 citations
,
July 1991 in “Veterinary Pathology” A dog had a rare skin condition linked to gland and pituitary issues.
November 2023 in “British Journal of Dermatology” Mutations in the WNT10A gene cause Short Anagen Hair syndrome and increase the risk of male pattern hair loss.
8 citations
,
November 2015 in “The American journal of dermatopathology/American journal of dermatopathology” Punctate follicular porokeratosis is a skin condition with specific features seen in hair follicles.
30 citations
,
May 1980 in “Journal of the American Academy of Dermatology” Alopecia areata can cause spotty white areas on nails.
10 citations
,
July 2001 in “PubMed” A new type of pachyonychia congenita may exist, caused by a different keratin mutation.
4 citations
,
January 2000 Piedraia hortae fungi dissolve both the outer and inner layers of hair.
January 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” The gene Ascl4 is not necessary for the development of hair, teeth, or mammary glands.
26 citations
,
February 1991 in “PubMed” Trichotillomania can be identified by a "Friar Tuck sign" and nail-biting.
October 2025 in “Journal of Bahria University Medical and Dental College” Many dental professionals are aware of AI but need more education and support to use it effectively.
10 citations
,
April 1979 in “American Journal of Veterinary Research” Canine circumanal glands develop from hair follicle sheath cells, not sebaceous glands, and lack exocrine ducts.
3 citations
,
July 2019 in “Fibers And Polymers/Fibers and polymers” June 2021 in “Zenodo (CERN European Organization for Nuclear Research)” Acanthosis nigricans is common in obese individuals, but not significantly linked to obesity type.
3 citations
,
September 2019 in “Journal of Orthodontics” A boy's hair grew back after he stopped using orthodontic headgear that caused temporary hair loss.
6 citations
,
September 2018 in “ACS applied bio materials” Calcium fatty acid deposits found in human hair can change its appearance and feel.
28 citations
,
September 2013 in “Biogerontology”