17 citations
,
January 2014 in “Journal of Oral and Maxillofacial Pathology” Seborrheic keratosis is a common, harmless skin growth that can look like cancer, so it may need a biopsy.
8 citations
,
April 2014 in “Clinical and Experimental Dermatology” Eruptive vellus hair cysts likely originate from the infrainfundibulum and sebaceous duct.
2 citations
,
November 2006 in “Pump Industry Analyst” Pilomatricomas don't follow the usual hair follicle cell differentiation process.
5 citations
,
March 1943 in “Archives of Dermatology and Syphilology” A rare case of severe scalp hair loss and nail issues in keratosis follicularis was observed.
6 citations
,
September 2014 in “Journal of the American Academy of Dermatology” Researchers found a potential new type of skin growth called follicular mucinous nevus.
38 citations
,
June 2005 in “International Journal of Dermatology” A man with nevus comedonicus syndrome had multiple skin issues, including basal cell carcinomas, which improved with treatment.
2 citations
,
May 2014 in “PubMed” A 10-year-old boy was diagnosed with a rare scalp condition causing hair loss and treated with a topical cream.
21 citations
,
April 2000 in “Journal of Cutaneous Pathology” The hamartoma is an abnormal hair growth with limited development in the upper hair follicle.
June 2021 in “The Journal of Family Practice” A 69-year-old woman has a fast-growing hand lesion that didn't improve with salicylic acid.
40 citations
,
February 1990 in “Journal of The American Academy of Dermatology” A 17-year-old developed woolly hair nevus in adolescence, which is unusual, and over time the hair darkened and straightened slightly, but microscopic changes persisted.
1 citations
,
January 2019 in “Dermatology Online Journal” A rare skin condition appeared on a 19-year-old woman's scalp.
2 citations
,
January 1989 in “The Nishinihon Journal of Dermatology” Seborrheic keratosis likely originates from the upper regions of hair follicles.
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.
8 citations
,
July 1986 in “International Journal of Dermatology” Eruptive vellus hair cysts are harmless skin bumps that may go away on their own.
A 12-year-old girl was misdiagnosed with alopecia areata but actually had a nevus sebaceus with a genetic mutation.
44 citations
,
January 1999 in “Dermatology” Nevus comedonicus is a rare skin condition with grouped open pores, sometimes linked to other body issues.
1 citations
,
September 2015 in “Serbian Journal of Dermatology and Venereology/Serbian Journal of Dermatology and Venerology” A 19-year-old male had two rare skin conditions causing scarring and permanent hair loss.
May 2020 in “International journal of dermatology and venereology” Hair matrix cysts are rare skin nodules with unique features, often needing surgical removal.
2 citations
,
January 2022 in “International journal of trichology” Eruptive vellus hair cysts are often missed in diagnoses.
1 citations
,
March 1991 in “PubMed” Naevoid bundle hair is an unusual hair growth pattern where multiple hairs fuse together.
26 citations
,
May 1988 in “Pediatric dermatology” Eruptive vellus hair cysts can run in families.
12 citations
,
January 2000 in “Journal of cutaneous medicine and surgery” Microorganism overgrowth and hyperkeratosis may trigger immune reactions causing lichen planopilaris.
3 citations
,
January 1989 in “The Nishinihon Journal of Dermatology” A hair cyst can become cancerous, showing specific keratins from the hair sheath.
29 citations
,
February 1989 in “Journal of Cutaneous Pathology” A unique hair tumor with a rippled pattern was identified, showing incomplete differentiation and unusual cell arrangements.
26 citations
,
May 2001 in “British Journal of Dermatology” Pilomatrixomas likely originate from the hair matrix due to changes in hair keratin expression.
3 citations
,
April 2011 in “Journal of the American Academy of Dermatology” A 19-year-old man had a rare skin condition on one side of his face that looked like another skin disease.
7 citations
,
March 1993 in “International Journal of Oncology” Basal cell carcinoma shows keratin patterns similar to hair follicle structures.
12 citations
,
April 2004 in “PubMed” A rare skin condition in a baby showed unusual fat and hair follicle changes.
January 2026 in “Indian Journal of Paediatric Dermatology” A 14-year-old boy has a skin condition called nevus comedonicus, treated with tretinoin cream.
July 2025 in “Clinical Dermatology Review” A rare family case of multiple benign hair follicle tumors was identified, highlighting the need to distinguish them from similar conditions.