21 citations
,
April 2000 in “Journal of Cutaneous Pathology” The hamartoma is an abnormal hair growth with limited development in the upper hair follicle.
August 2023 in “International Journal of Molecular Sciences” The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.
January 2016 in “Dermatology online journal” A 15-year-old girl has a benign skin tumor on her neck.
June 2023 in “Dermatopathology” A woman had a unique skin growth with hair follicle, oil glands, fat cells, spindle cells, and nerve fibers.
130 citations
,
January 1994 in “Differentiation” Mouse hair follicle cells briefly grow during the early hair growth phase, showing that these cells are important for starting the hair cycle.
5 citations
,
February 2015 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” OCT can non-invasively diagnose follicular keratosis and other hair follicle disorders.
3 citations
,
December 2013 in “Journal of Dermatology” Scanning electron microscopy revealed four distinct hair root shapes in alopecia areata, suggesting a less invasive diagnostic method.
8 citations
,
January 2013 in “Australasian journal of dermatology” Trichodysplasia spinulosa is a rare skin condition caused by a virus, treatable with antiviral medication.
September 2025 in “Egyptian Journal of Dermatology and Venerology” Dermoscopy is crucial for diagnosing rare scalp tumors like trichofolliculoma.
15 citations
,
March 1987 in “Phycologia” Phosphorus limitation causes significant hair growth in certain algae.
72 citations
,
July 1984 in “Journal of Investigative Dermatology”
7 citations
,
June 1967 in “Journal of Investigative Dermatology” Plucking hairs in a certain way can result in intact hair roots, not related to baldness.
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.
2 citations
,
June 2020 in “Dermatology and therapy” Narrowband-UVB phototherapy successfully treated a rare case of Graham Little-Piccardi-Lassueur syndrome.
9 citations
,
April 1985 in “Canadian Journal of Zoology” Moose have unique interdigital glands with green hairs and larger glands during mating season.
30 citations
,
August 1984 in “Journal of the American Academy of Dermatology” Low-sulfur hair syndrome can cause UVB sensitivity and testicular failure.
34 citations
,
August 1966 in “Experimental cell research” Keratin fibrils in hair form and stop growing at specific points in the follicle.
2 citations
,
April 2022 in “Medicine” A Chinese boy's scalp infection from a guinea pig was cured with medication.
October 2025 in “Dermatologic Surgery” Twisted hair follicles can survive transplantation as well as intact ones.
28 citations
,
January 1985 in “Journal of the American Academy of Dermatology” A girl with citrullinemia developed pili torti, suggesting a link between the hair condition and the metabolic disorder.
Dissecting cellulitis and folliculitis keloidalis cause intense inflammation without bacterial infection.
3 citations
,
January 2005 in “Biological & Pharmaceutical Bulletin” The peptide GPIGS helps hair cells grow and speeds up hair regrowth in mice.
April 2025 in “Veterinary Dermatology” Dermoscopy is useful for identifying skin lesions in dogs, with specific features distinguishing infundibular keratinising acanthomas from follicular cysts.
January 2011 in “대한피부과학회지” A 7-year-old girl was diagnosed with trichothiodystrophy due to low sulfur levels in her hair.
43 citations
,
April 2010 in “Developmental Biology” Sebaceous glands can form new hair follicles when activated, but hair follicle bulges cannot.
1 citations
,
August 2021 A young girl had a rare neck cyst removed and needs careful monitoring for related health issues.
21 citations
,
June 1992 in “Pediatric Dermatology” Eruptive vellus hair cysts are often underreported and need histologic confirmation for accurate diagnosis.
December 2021 in “International journal of research - granthaalayah” A young woman had a rare, usually non-cancerous tumor on her face that was initially mistaken for a different condition.
13 citations
,
June 2011 in “PubMed” The patient improved significantly after treatment, with only one small scar remaining.
7 citations
,
October 2017 in “Journal of exotic pet medicine” A guinea pig with ovarian cysts had a uterine infection and abnormal uterus lining due to a piece of hay inside it.