10 citations
,
January 2018 in “International journal of trichology” Eruptive vellus hair cysts are rare and often misdiagnosed, requiring biopsy for accurate diagnosis.
90 citations
,
December 2008 in “Journal of Investigative Dermatology” Thyroid-stimulating hormone affects hair follicles but doesn't change hair growth or color.
January 2020 in “Journal of oral medicine and oral surgery” Hair grew in a man's mouth due to a rare condition called heterotopia.
February 2025 in “Veterinary Clinical Pathology” The ferret had a malignant apocrine gland tumor and did not survive surgery.
April 2026 in “Veterinary Medicine and Science” Adrenal tumors in hamsters are rare and hard to diagnose, highlighting the need for better diagnostic tools.
The man has Temporal Triangular Alopecia, a stable, non-scarring hair loss condition best treated with hair transplantation.
9 citations
,
November 2015 in “JAMA dermatology” A 91-year-old woman's hair turned black in one spot, with skin changes underneath.
November 2025 in “SKIN The Journal of Cutaneous Medicine” Granuloma faciale can occur on the scalp, especially in people with advanced hair loss, and may improve with treatment.
1 citations
,
September 2021 in “CRC Press eBooks” Frontal Fibrosing Alopecia is a hair loss condition mainly affecting postmenopausal women, with unclear causes and various clinical patterns.
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.
13 citations
,
January 1985 in “International Journal of Dermatology” The document found differences in lesion distribution and microscopic features among trichostasis spinulosa and similar skin conditions.
July 2025 in “Journal of Investigative Dermatology” Miniaturized hair follicles in androgenetic alopecia show abnormal mitochondrial activity and damage.
April 2023 in “Journal of Investigative Dermatology” The research found that certain factors in hair follicle cells control hair growth and development, and these could be used to create new treatments for hair loss.
November 2017 in “International journal of research in dermatology” A rare skin disorder, nevus comedonicus, can appear on one side of the body following Blaschko's lines.
3 citations
,
December 1967 in “Australasian Journal of Dermatology” Becker's Melanosis and Hypertrichosis mainly affects young males, causing brown skin patches and extra hair on one side of the upper body.
January 2006 in “Chinese Journal of Dermatology” Amelanotic melanocytes from hair follicles are immature and likely don't transfer melanosomes to keratinocytes.
2 citations
,
May 1991 in “PubMed” Nevus comedonicus is a rare skin condition causing dark bumps, treatable with retinoic acid or surgery.
2 citations
,
August 2008 in “Oncotarget” Apoptosis in hair follicles spreads through cell death signals, with stem cells slowing the process.
2 citations
,
December 2018 Alopecia frontal fibrosante affects facial vellus hair and can be diagnosed with dermatoscopy.
10 citations
,
March 1973 in “Journal of Investigative Dermatology”
66 citations
,
June 2010 in “Experimental Dermatology” The hair follicle is a great model for research to improve hair growth treatments.
6 citations
,
July 2009 in “Journal of Cutaneous Pathology” Hair follicle stem cells are key for hair growth and skin repair.
53 citations
,
April 1985 in “Developmental Biology” Fibronectin and other basement membrane components increase during hair growth and decrease during rest.
1 citations
,
April 2016 in “Journal of The American Academy of Dermatology” The study concludes that Loose Anagen Hair Syndrome is a benign condition that usually improves with age but can be hard to diagnose and stressful for the family.
July 2007 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” The BASP classification is a detailed system for categorizing hair loss in both men and women, but it may be complex for beginners and not fully suitable for grading female hair loss.
1 citations
,
April 2021 in “Clinical, Cosmetic and Investigational Dermatology” Conflicting findings in androgenic alopecia are likely due to biopsy location, hair diameter diversity, and hair follicle miniaturization.
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.
July 2025 in “International Journal of Trichology” Trichoscopy effectively diagnoses temporal triangular alopecia in children.
2 citations
,
January 2016 in “Dermatology online journal” A 46-year-old man was diagnosed with frontal fibrosing alopecia, a condition usually seen in postmenopausal women.