January 2009 in “Journal of the American Academy of Dermatology” Generalized trichoepitheliomas with alopecia may indicate myasthenia gravis.
October 2024 in “Journal of Cutaneous Pathology” Compound follicles in folliculitis decalvans mainly have active hair follicles.
6 citations
,
April 2013 in “British Journal of Dermatology” Hidradenitis suppurativa is likely caused by blocked hair follicles, not apocrine glands.
6 citations
,
August 2011 in “Anais Brasileiros de Dermatologia” Vellus hair cysts can cause acne-like bumps that don't respond to treatment.
May 2024 in “JAAD Case Reports” A young man was diagnosed with a rare hair loss condition usually seen in older women.
1 citations
,
December 1965 in “PubMed”
62 citations
,
September 2014 in “PLoS ONE” Acne-affected skin has more inflammation-related proteins and bacteria than healthy skin.
21 citations
,
November 1980 in “PubMed” A new mite species was found in California sea lions, causing skin issues.
14 citations
,
December 2013 in “Experimental Dermatology” The T-zone on the face has more androgen receptors and produces more oil than the U-zone.
1 citations
,
February 2022 in “Case reports in endocrinology” An unusual growth of Leydig cells in a woman's ovaries caused her excessive hair growth, which was treated successfully with surgery.
1 citations
,
March 2023 in “Journal of Ultrasound in Medicine” Ultrasound effectively distinguishes trichilemmal cysts from epidermoid cysts.
6 citations
,
January 2015 in “Indian Dermatology Online Journal” PEODDN is a rare skin disorder with limited treatment options, best treated with laser therapy.
46 citations
,
August 1977 in “Journal of Morphology” The big-clawed shrew's sinus hair follicles are highly specialized for sensing vibrations.
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.
October 2023 in “Research Review” Some skin tumors from hair follicles and glands can be linked to genetic syndromes and may be benign or malignant.
28 citations
,
May 1998 in “Journal of the American Academy of Dermatology” Scalp inflammation can cause multiple hairs to grow from one follicle.
14 citations
,
April 1976 in “Journal of Cutaneous Pathology” A calcified nodule on a boy's face came from hair follicles and expelled calcium through the skin.
June 2025 in “Judi Clinical Journal” Multiple pilonidal sinuses can be successfully treated with a mix of surgery and conservative care.
April 2019 in “Journal of the Endocrine Society” Bilateral ovarian hyperthecosis is a rare but treatable cause of increased facial hair in postmenopausal women.
1 citations
,
February 2017 in “The American journal of dermatopathology/American journal of dermatopathology” A man with a skin nodule was diagnosed with a rare skin condition called cutaneous focal mucinosis, which can be confused with other skin cancers.
September 2024 in “Journal of the American Academy of Dermatology” The patient responded well to treatment with no disease progression.
Benign skin tumors need accurate diagnosis to ensure proper treatment.
March 2026 in “Dermatology Online Journal” Cystic panfolliculoma is a rare, harmless tumor that can be confused with other skin tumors.
Pseudofolliculitis causes painful bumps and dark spots from shaving, especially in people with curly hair, and can be treated by changing shaving habits and using specific topical treatments.
April 2016 in “Journal of Investigative Dermatology” MEK and BRAF inhibitors increase sebum production and accumulation, which could cause acne-like side effects.
15 citations
,
May 1989 in “PubMed” Psoriasis on the scalp causes smaller oil glands and thinner hair but doesn't lead to hair loss.
1 citations
,
December 1997 in “Archives of dermatology” A 34-year-old woman had itchy black bumps on her face due to a condition called trichostasis spinulosa.
6 citations
,
January 2017 in “JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH” A rare hair follicle tumor was found on a woman's vulva.
9 citations
,
January 2019 in “Skin appendage disorders” Researchers found a new sign of fungal infection in some patients with Seborrheic Dermatitis.
Surgery can cause skin cysts in dogs.