Benign tumors from hair follicles can look like other skin cancers but have distinct features under dermoscopy.
40 citations
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November 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Different melanocyte types in hair follicles either survive or die during the catagen phase.
2 citations
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July 2011 in “International Journal of Dermatology” EPF can occur without visible pustules.
13 citations
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January 2014 in “Postępy Dermatologii i Alergologii” Patchy alopecia areata can affect only pigmented hairs, leaving gray hairs untouched.
March 2019 in “Nasza Dermatologia Online” A rare scalp condition with hair loss was correctly diagnosed and treated, leading to hair regrowth.
2 citations
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February 2019 in “Anais brasileiros de dermatologia/Anais Brasileiros de Dermatologia” Tufted folliculitis is common in patients with folliculitis decalvans.
January 2022 in “Skin appendage disorders” Trichoscopy effectively visualizes scalp micropigmentation without invasive methods.
4 citations
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August 1991 in “The Journal of Dermatology” The tumor on the man's nose was a rare type called pedunculated follicular hamartoma.
11 citations
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August 1987 in “Archives of Dermatology” Langerhans' cells are not involved in hair depigmentation in these mice.
2 citations
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May 1991 in “PubMed” Nevus comedonicus is a rare skin condition causing dark bumps, treatable with retinoic acid or surgery.
10 citations
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January 1925 in “Archives of Dermatology” Trichostasis spinulosa is a rare skin condition with hair-filled plugs in hair follicles.
11 citations
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June 1974 in “Journal of Cutaneous Pathology” Follicular mucinosis causes significant damage to hair follicle cells.
12 citations
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August 1988 in “Histopathology” The tumor likely shows dual neural crest differentiation.
96 citations
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December 1995 in “Journal of Investigative Dermatology”
19 citations
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September 2016 in “Journal of the European Academy of Dermatology and Venereology” Trichofolliculoma is a unique benign tumor mainly affecting middle-aged adults' faces, often misdiagnosed without histopathology.
9 citations
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June 2017 in “Journal of Cutaneous Pathology” People with pemphigus vulgaris and pemphigus foliaceus often have smaller sebaceous glands on their scalp.
4 citations
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January 2019 in “Micron” Fetal hair follicles have melanocytes with melanosomes at different stages, which are broken down into pigment particles in keratinocytes.
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.
5 citations
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January 1985 in “The Journal of Dermatologic Surgery and Oncology” A man developed unusual growths after a hair transplant, which were treated successfully with no recurrence after a month.
June 2026 in “Indian Dermatology Online Journal” 51 citations
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May 1984 in “Journal of the American Academy of Dermatology” Benign follicular mucinosis involves immune cells attacking hair follicles.
7 citations
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May 1988 in “International Journal of Dermatology” The patient's hair has unique structural differences with alternating bright and dark bands.
103 citations
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April 2005 in “Experimental dermatology” Prostaglandin F2alpha and related compounds can increase hair growth and darken hair in mice.
1 citations
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September 2024 in “Frontiers in Cell and Developmental Biology” Pigs are a good model for studying human hair growth and disorders.
7 citations
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March 2018 in “Experimental Dermatology” Acne lesions don't show increased keratinocyte growth compared to healthy hair follicles.
April 2021 in “BMJ Case Reports” Accurate diagnosis of pseudolymphomatous folliculitis is crucial to avoid mistaking it for more serious conditions.
January 2022 in “Journal of clinical and diagnostic research” A rare skin bump with tiny hairs was successfully removed from a man's face.
3 citations
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April 1997 in “Developmental Dynamics” Trypsin slows hair growth and affects color by causing cell death in hair follicles.
5 citations
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May 1958 in “Archives of Dermatology” Treatment with corticosteroids and zinc injections can help hair regrowth and restore pigmentation in alopecia totalis.
11 citations
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July 2010 in “Dermatologic Surgery” Postoperative folliculitis after hair transplants is a minor issue that doesn't relate to patient details or how much hair is transplanted.