14 citations
,
January 1998 in “Dermatology” Polythelia pilosa is a type of extra breast tissue with hair and should be classified as such.
3 citations
,
January 2010 in “Elsevier eBooks” The document describes various skin conditions, their features, and treatments but lacks detailed study size information.
November 2019 in “Harper's Textbook of Pediatric Dermatology” The document is a detailed medical reference on skin and genetic disorders.
56 citations
,
February 2012 in “Developmental biology” Sostdc1 controls the size and number of hair and mammary gland structures.
10 citations
,
January 1925 in “Archives of Dermatology” Trichostasis spinulosa is a rare skin condition with hair-filled plugs in hair follicles.
January 2021 in “Nasza Dermatologia Online” Plica polonica is a rare condition where hair becomes irreversibly tangled, and the treatment is to cut the matted hair.
9 citations
,
August 2021 in “Journal of clinical medicine” Pili torti is a rare condition where hair is twisted and breaks easily, often linked to genetic disorders or other health issues.
7 citations
,
May 1988 in “International Journal of Dermatology” The patient's hair has unique structural differences with alternating bright and dark bands.
14 citations
,
May 1979 in “International Journal of Dermatology” Trichostasis spinulosa mainly affects the nose, with many tiny hairs in one follicle, possibly influenced by hormones and sunlight.
23 citations
,
July 1994 in “Journal of Dermatological Science” Pili torti hair twists due to uneven outer root sheath cell development.
January 2026 in “Cosmoderma” A 9-year-old girl has a rare hair disorder causing beaded, sparse hair.
8 citations
,
May 2005 in “The American journal of dermatopathology/American journal of dermatopathology” The hair defect is due to abnormal inner root sheath keratinization.
1 citations
,
January 2019 in “Pan African Medical Journal” Keratosis pilaris causes small skin bumps, mainly in women, and treatments offer only temporary relief.
October 2024 in “Skin Research and Technology” Pili annulati causes zebra-striped hair but doesn't affect hair strength or quality of life.
5 citations
,
March 2009 in “Pediatric Dermatology” The study found that pili bifurcati causes hair to intermittently split into two branches, each with its own outer layer.
12 citations
,
May 2009 in “Ophthalmic plastic and reconstructive surgery” Multiple pilomatrixoma may indicate Turner syndrome.
January 2022 in “Revista Dermatológica Centro Uraga” Monilethrix is a genetic hair disorder affecting hair shape, seen in two brothers.
1 citations
,
January 2018 in “Acta dermato-venereologica” A teenager's hair with alternating white and dark bands, known as Pili annulati, is a genetic condition that is usually harmless and often considered attractive.
8 citations
,
January 2014 in “Indian Dermatology Online Journal” Trichostasis spinulosa is a common but often unnoticed skin condition involving bundled vellus hairs, especially in people with darker skin or UV exposure.
1 citations
,
August 2024 in “Pediatric Dermatology” A rare, harmless hair condition was found in an infant's eyebrow, needing no treatment.
13 citations
,
November 1985 in “International Journal of Dermatology” The study found clear differences in lesion distribution and microscopic features among trichostasis spinulosa, keratosis pilaris, and eruptive vellus hair cysts.
36 citations
,
July 1988 in “Archives of Dermatological Research” Pili annulati is caused by a protein metabolism disorder affecting hair structure.
February 2026 in “International Journal of Homoeopathic Sciences” Plica Polonica is a rare hair disorder causing severe matting, managed by detangling or cutting, and prevented with regular hair care.
1 citations
,
July 2023 in “Cureus” A rare hair disorder with multiple hairs from one follicle was found on a patient's abdomen.
June 2024 in “Annals of Medicine and Surgery” A 23-year-old Syrian woman has two rare hair disorders, and avoiding hair treatments plus using vitamins and minoxidil may help.
1 citations
,
October 2022 in “Dermatology practical & conceptual” Isolated patchy heterochromia with pili annulati can occur without other health issues.
September 2021 in “Mağallaẗ al-Muẖtar li-l-ʿulūm” Two sisters have rare hair disorders causing short, fragile, kinky hair.
2 citations
,
July 2019 in “Indian dermatology online journal” A 17-year-old girl and her brothers have a rare hair condition with long eyelashes, thick eyebrows, and easily pluckable hair.
March 2023 in “International journal of integrated medical research” Keratosis pilaris is a common skin condition where hair follicles get clogged with keratin, mostly on the arms and thighs.
2 citations
,
January 2007 in “Actas Dermo-Sifiliográficas” Two cases of hairy elbows syndrome were described, with normal skin texture and symmetrical hair growth.