Follicular porokeratosis (FPK) is a rare subtype of porokeratosis. Follicular porokeratosis mainly occurs in men and may be localized or diffuse. Involvement of the scalp is rarely reported, and we found only one case of alopecia due to scalp FPK. Diabetes mellitus has not been reported in association with FPK We report a 35-year-old diabetic woman that presented with brown follicular keratotic papules and spicules involving the scalp, face, trunk, and extremities, accompanied by scalp alopecia. The differential diagnoses were lichen planopilaris, papular eczema, and phrynoderma. Histopathologic examination of skin punch biopsies revealed the follicle-centered cornoid lamella as the feature of FPK. The patient was treated with oral isotretinoin, and the lesions improved partially within 6 weeks of follow-up. Follicular porokeratosis might be considered among the differential diagnoses of keratotic papules (with or without spicules) and in the cases of alopecia with keratotic papules. Diabetes mellitus may be associated with FPK.
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| http://dx.doi.org/10.1002/ccr3.70100 | DOI Listing |
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Follicular porokeratosis (FPK) is a rare subtype of porokeratosis. Follicular porokeratosis mainly occurs in men and may be localized or diffuse. Involvement of the scalp is rarely reported, and we found only one case of alopecia due to scalp FPK.
View Article and Find Full Text PDF[Translated article] Wood's Light in Inflammatory and Autoimmune Dermatoses, Infections and Skin Cancer.
Actas Dermosifiliogr
December 2024
Servicio de Dermatología, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain; Servicio de Dermatología, Hospital de Figueres, Fundació Salut Empordà, Figures, Girona, Spain. Electronic address:
Wood's light (WL) is a useful, economical and easy-to-learn diagnostic tool. Despite its advantages, the use of LW among dermatologists is limited. In porokeratosis, the "diamond necklace" sign has been described, corresponding to the white fluorescence of the hyperkeratotic scale.
View Article and Find Full Text PDFPenile and Scrotal Porokeratosis: A Single-Institution Experience.
Am J Dermatopathol
November 2024
Pathologists Departments of Dermatology and Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN.
Article Synopsis
- The study investigates porokeratosis localized to the penis and scrotum, analyzing data from patients diagnosed between 2000 and 2022.
- Nine patients were included, with a median age of 51, and most had either penile or scrotal lesions, while one had extensive lesions affecting multiple areas.
- The findings indicate that clinical diagnosis can be challenging and highlights the importance of histopathological examination, as follow-ups showed no recurrence or malignant transformation in patients after biopsy removal.
Wood's Light in Inflammatory And Autoimmune Dermatoses, Infections and Skin Cancer.
Actas Dermosifiliogr
September 2024
Servicio de Dermatología, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, España; Servicio de Dermatología, Hospital de Figueres, Fundació Salut Empordà, Figures, Girona, España. Electronic address:
Article Synopsis
- Wood's light (WL) is an effective and inexpensive diagnostic tool, but its usage is not very common among dermatologists.
- In conditions like porokeratosis and various pigmentary disorders, WL shows specific fluorescence patterns that help in diagnosis, such as the "diamond necklace" sign for porokeratosis and bluish fluorescence for vitiligo.
- WL is also valuable in identifying skin infections with distinct fluorescence colors, and it aids in determining surgical margins for certain skin cancers, although results can vary.
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