July 2023 in “International journal of physiology” Hypertrichosis lanuginosa causes excessive fine hair growth, often linked to genetics or cancer, with limited treatment options.
January 2026 in “Annals of Pathology and Laboratory Medicine” Accurate diagnosis of rare pilomatrix carcinoma is crucial for effective treatment.
January 2016 in “Indian dermatology online journal” The patient has frontal fibrosing alopecia (FFA).
13 citations
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January 2010 in “PubMed”
January 2014 in “Pathology” Non-scarring hair loss can be diagnosed with two 4mm punch biopsies, one cut vertically and the other transversely.
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.
January 2023 in “Skin appendage disorders” Two Hispanic women developed Plica neuropathica, a condition causing tangled hair, possibly due to hair damage and various risk factors.
7 citations
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March 2003 in “PubMed” The scalp has a natural speckled pattern of increased pigment around hair follicles, possibly linked to local hormone production.
June 2022 in “IP Indian journal of clinical and experimental dermatology” Benign skin adnexal tumors are more common than malignant ones, with trichoepithelioma and chondroid syringoma being the most frequent types.
Preserving intact follicular units improves hair transplant success.
January 2006 in “Chinese Journal of Dermatology” Amelanotic melanocytes from hair follicles are immature and likely don't transfer melanosomes to keratinocytes.
December 2022 in “The journal of pediatrics/The Journal of pediatrics” A young girl's foot lesion was actually a rare condition caused by a hair fragment under the skin, not a parasite.
6 citations
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April 2013 in “International Journal of Dermatology” Dermoscopy helps diagnose unusual skin lesions like osteonevus of Nanta and can prevent misdiagnosis of serious conditions.
April 2019 in “Journal of the Endocrine Society” Bilateral ovarian hyperthecosis is a rare but treatable cause of increased facial hair in postmenopausal women.
13 citations
,
June 2011 in “PubMed” The patient improved significantly after treatment, with only one small scar remaining.
1 citations
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December 2023 in “Indian Dermatology Online Journal” Steatocystoma multiplex causes recurring skin cysts and needs early recognition for better management.
May 2025 in “Journal of Clinical Images and Medical Case Reports” Hair transplants can trigger a rare scarring hair loss that is hard to treat.
June 2023 in “JAAD Case Reports” A man had a rare skin cancer that looked like a bald spot.
November 2011 in “APMIS. Acta pathologica, microbiologica et immunologica Scandinavica./APMIS” Polyomavirus A2 infection in newborn mice caused hair follicle tumors.
4 citations
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January 2019 in “Obstetrics & gynecology science” A PET-CT scan successfully located a hard-to-find Leydig cell tumor in a woman with hormonal symptoms.
June 2025 in “Histopathology” Epithelial elements in superficial angiomyxomas are non-neoplastic growths mimicking embryogenesis.
13 citations
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March 2000 in “Veterinary Dermatology” Dogs have a skin condition like human pseudopelade, causing hair loss that doesn't improve with treatment.
April 2023 in “Journal of Investigative Dermatology” Mutations in the SHH pathway in certain skin cells can cause skin tumors and abnormal hair growth.
9 citations
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December 2012 in “Indian Journal of Dermatology Venereology and Leprology” Two sisters had rare, widespread cysts and complete hair loss, suggesting a genetic link.
18 citations
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January 2009 in “Experimental Dermatology” mTOR may link different pathways in hair follicle tumor formation.
1 citations
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May 2007 in “Chinese Medical Journal” Complete removal of large scalp nevi is recommended to prevent complications.
October 2023 in “Journal of the Endocrine Society” A woman's ovarian fibroma caused high testosterone levels, which normalized after surgery.
3 citations
,
April 2021 in “Berkala ilmu kedokteran/Journal of the medical sciences” A fungus called Epidermophyton floccosum can cause scalp infections.
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.
100 citations
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June 2006 in “British Journal of Dermatology” Hair loss severity relates to increased miniaturization in female pattern hair loss.