2 citations
,
March 2016 in “International Journal of Dermatology” Kikuchi–Fujimoto disease can cause scarring alopecia and should be considered in diagnosis.
14 citations
,
September 2009 in “International Journal of Dermatology” DCPA is a chronic leg infection often related to Staphylococcus aureus, affecting mostly young men in India.
January 2012 in “Open MIND” Oral minoxidil can cause painful skin bumps and scarring in some people.
66 citations
,
December 1999 in “Journal of Investigative Dermatology” New mutations in the hairless gene may cause hair loss and affect bone development.
1 citations
,
January 2022 in “Clinical Cases in Dermatology” A rare scalp condition was successfully treated with specific medications after 9 months.
March 2022 in “Folia Medica Indonesiana” The lump on a woman's scalp was a rare, potentially cancerous tumor from the hair follicle, not a common cyst.
5 citations
,
January 2017 in “Anais brasileiros de dermatologia/Anais Brasileiros de Dermatologia” Porokeratotic eccrine and hair follicle nevus is a very rare skin disorder possibly caused by a GJB2 gene mutation.
June 2018 in “Journal of the American Veterinary Medical Association” Three related Persian cats have a rare, likely hereditary skin condition causing hair loss and poor coat quality, with limited treatment options.
96 citations
,
February 2002 in “Journal of the American Academy of Dermatology” Pseudofolliculitis barbae is a chronic skin condition affecting mainly African American and Hispanic individuals, caused by shaving tightly curled hair, and managed by prevention and treatment but not curable.
5 citations
,
February 2005 in “Journal of the American Academy of Dermatology” Focal palmoplantar callosities may help diagnose non-Herlitz junctional epidermolysis bullosa.
A man had a rare pigmented nodule on his scalp that developed from birthmarks.
21 citations
,
April 2000 in “Journal of Cutaneous Pathology” The hamartoma is an abnormal hair growth with limited development in the upper hair follicle.
September 1998 in “Journal of the European Academy of Dermatology and Venereology” Autoimmune and inflammatory processes are involved in both scarring and non-scarring types of hair loss.
Bovines can have rare inherited skin diseases with specific symptoms like hair loss, fragile skin, and abnormal porphyrin buildup.
April 2023 in “Journal of Investigative Dermatology” An elderly woman's upper lip lump, thought to be a mucocele, was actually a rare type of lymphoma usually found on legs, treated successfully with chemotherapy and radiation.
2 citations
,
January 2022 in “JAAD Case Reports” The rash resolved after stopping ponatinib.
March 2019 in “Nasza Dermatologia Online” A man had both alopecia areata and lichen planus, which is uncommon.
23 citations
,
February 2003 in “British Journal of Dermatology” A rare type of skin lymphoma was identified, affecting hair follicles and sweat glands.
13 citations
,
March 2011 in “British Journal of Dermatology” A woman with scalp lymphoma and hair loss improved with radiotherapy, highlighting the need for biopsies in similar cases.
1 citations
,
June 2019 in “Journal of Cutaneous Immunology and Allergy” Squaric acid dibutylester can cause severe skin reactions in people with allergies.
232 citations
,
July 1995 in “Nature Genetics”
December 2024 in “Indian Journal of Veterinary Public Health” Argentine-cross polo ponies commonly develop sarcoid tumors with distinct types and histopathological features.
2 citations
,
August 2004 in “Veterinary Dermatology” A dog with a hereditary skin condition causing blisters and hair loss survived for a year.
February 2026 in “International Journal of Homoeopathic Sciences” Plica Polonica is a rare hair disorder causing severe matting, managed by detangling or cutting, and prevented with regular hair care.
6 citations
,
July 2017 in “Clinical and Experimental Dermatology” Four new cases confirmed the unique features of follicular porokeratosis.
November 2023 in “Skin Appendage Disorders” A rare scalp condition can occur due to leukemia affecting the skin.
2 citations
,
January 2018 in “Indian dermatology online journal” A homeopathic antidandruff shampoo caused severe hair matting in a girl.
2 citations
,
January 2011 in “Dermatologica Sinica” Taiwan reported its first case of a rare scalp condition with no clear cause or treatment.
1 citations
,
July 1973 in “British Journal of Dermatology” The document concludes that secondary syphilis cases are increasing and often misdiagnosed, pityriasis rubra pilaris can be distinguished from psoriasis by skin cell features, and different skin layers produce specific components during skin repair.
2 citations
,
August 2012 in “Journal of the American Academy of Dermatology” Two patients with the same genetic mutation had both blistering skin and easily pulled out hair.