August 2010 in “Journal of The American Academy of Dermatology” The document explains the diagnosis and characteristics of woolly hair nevus and alopecia neoplastica.
January 2022 in “Journal of clinical and diagnostic research” A rare skin bump with tiny hairs was successfully removed from a man's face.
20 citations
,
October 2005 in “Archives of Dermatological Research”
February 2024 in “Cureus” Pilomatrixoma should be considered for nodular lesions in adults.
47 citations
,
February 2014 in “Journal of Cutaneous Pathology” Matrical tumors share a common growth mechanism involving the Wnt pathway and consistent PHLDA1 expression.
11 citations
,
May 1998 in “Child's nervous system” A baby had a rare condition with abnormal blood vessels in the brain and unusual skin and hair growth, possibly a new syndrome.
1 citations
,
July 2024 in “International Journal of Molecular Sciences” MicroRNA-181a slows sheep hair growth by targeting GNAI2 and affecting a key growth pathway.
26 citations
,
April 2007 in “Journal of clinical oncology” 25 citations
,
July 1994 in “Journal of Cell Science” Immortalized rat dermal papilla cells can still induce hair growth.
8 citations
,
January 2014 in “Indian Journal of Paediatric Dermatology” Congenital atrichia with papular lesions causes permanent hair loss and skin bumps from birth.
1 citations
,
January 2022 in “Journal of veterinary diagnostic investigation” A British Bulldog had a unique viral plaque caused by Canine papillomavirus 18, different from typical tumors.
69 citations
,
May 2002 in “Journal of Investigative Dermatology” Congenital atrichia with papular lesions is often misdiagnosed, and new diagnostic criteria can improve accuracy.
September 2009 in “International Journal of Dermatology and Venereology” Dermal papilla cells play a key role in hair growth and health.
December 2025 in “SAS Journal of Medicine” Trichofolliculoma is a rare, benign scalp tumor that can be cured by surgical removal.
71 citations
,
February 2006 in “Clinics in Dermatology” Pregnancy causes skin changes like darkening, hair thickening, nail changes, and increased risk of skin growths, most of which usually resolve after birth.
April 2020 in “International journal of research in dermatology” An 8-year-old girl has a rare, irreversible hair loss condition caused by a genetic mutation.
18 citations
,
February 2001 in “Der Hautarzt” A woman with myotonic dystrophy had multiple skin tumors on her scalp, suggesting a genetic link.
2 citations
,
May 2022 in “International journal of trichology” Plica neuropathica is a tangled hair condition that may be caused by hair damage or psychiatric issues and is treated by cutting the hair and addressing mental health.
January 2022 in “Clinical Cases in Dermatology” A woman's scalp nodule was a common, harmless pilar cyst, treated by surgical removal.
1 citations
,
March 2013 in “Journal of Dermatological Case Reports” A rare skin condition affected only the facial hair of a 46-year-old man.
91 citations
,
July 2004 in “BMJ. British medical journal” The document concludes that molluscum contagiosum is a common, benign skin infection in children, often healing without scarring.
13 citations
,
January 2012 in “Dermatology” Eruptive vellus hair cysts are rare, benign skin lesions that are hard to treat.
3 citations
,
November 2022 in “Frontiers in Medicine” Onychopapilloma likely originates from the nail bed, not the nail matrix.
10 citations
,
January 2018 in “International journal of trichology” Eruptive vellus hair cysts are rare and often misdiagnosed, requiring biopsy for accurate diagnosis.
18 citations
,
March 2003 in “British journal of dermatology/British journal of dermatology, Supplement” Trichofolliculoma has specific cytokeratin patterns that help in its diagnosis.
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.
September 2025 in “Journal of Veterinary and Animal Sciences” Nine hair follicle tumors were found in dogs.
19 citations
,
March 2016 in “British journal of dermatology/British journal of dermatology, Supplement” Trichodysplasia spinulosa is a rare skin disease in immunocompromised patients caused by a specific virus targeting hair follicle cells.
March 2021 in “Revista da Associação Médica Brasileira”
6 citations
,
February 2016 in “American Journal of Dermatopathology” The boy with woolly hair nevus had thinner hair and abnormal hair follicles, which improved with treatment but worsened when treatment stopped.