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http://dx.doi.org/10.1111/ijd.14565 | DOI Listing |
J Cosmet Dermatol
August 2025
Department of Ultrasound, Aerospace Center Hospital, Beijing, China.
Background: Previous studies reported that patients with keloid, acne, or hypertrophic scar (HS) had lower serum vitamin D levels compared to healthy controls. Whereas, these works failed to verify their causal relationships. Hence, we performed a Mendelian randomization (MR) aimed to investigate the causal relationship between vitamin D and keloid, acne, or HS.
View Article and Find Full Text PDFCureus
July 2025
Plastic and Reconstructive Surgery, Japan Community Healthcare Organization (JCHO) Saitama Medical Center, Saitama, JPN.
Chronic suppurative diseases of the scalp, including acne keloidalis nuchae (AKN), dissecting cellulitis of the scalp (DCS), and folliculitis decalvans, are characterized by the presence of persistent abscesses, fistulas, and progressive scarring. The treatment of these conditions often presents a challenge, requiring both pharmacological and surgical interventions. We present herein two cases of long-standing, chronic, refractory suppurative scalp conditions that were successfully treated with surgical excision and subsequent skin grafting.
View Article and Find Full Text PDFCureus
June 2025
Family Medicine, Louisiana State University Health Sciences Center, Alexandria, USA.
Acne keloidalis nuchae (AKN), also known as folliculitis keloidalis nuchae and nuchal keloid acne, is a chronic inflammatory skin disorder of the hair follicle. Predominantly occurring in the nuchal and occipital scalp, it can lead to keloid-like plaques and cicatricial alopecia. Primarily affecting people of color, more specifically African American individuals, it is associated with haircuts, friction, or trauma among a variety of other less common causes.
View Article and Find Full Text PDFInt J Trichology
June 2025
Center for Dermatology and Hair Diseases Professor Trüeb, Zurich-Wallisellen, Switzerland.
Background: The frequencies of the different types of alopecia in hair referral centres have so far been reported in a single multicentre study at multiple specialist hair clinics over a time period of one month.
Aim: Single center studies over a longer time-frame offer a more representative and homogeneous study population with regard to ethnic, demographic, and climatic factors, and seasonality of hair growth and shedding than multicenter studies over a short time frame.
Materials And Methods: Retrospective study of patient data at a single centre over 10 years.
JAMA Dermatol
July 2025
Ronald O. Perelman Department of Dermatology, New York University Grossman School of Medicine, New York.