- Source: Lichen spinulosus
Lichen spinulosus is a rare skin disorder characterized by follicular keratotic papules that are grouped into large patches. It is a variant of keratosis pilaris named for its resemblance to a patch of lichen.
Signs and symptoms
It appears as a cluster of keratotic spines that resemble sandpaper and 2–5 cm hypopigmented or skin-colored follicular papules. The lesions typically appear on different parts of the skin and last for a few weeks or months.
Causes
It could be inherited or linked to substances like gold, arsphenamine, thallium, vitamin A deficiency, diphtheria toxin, atopy, lithium medication, Hodgkin's disease, Crohn's disease, HIV, or alcoholism.
Diagnosis
The histologic observations reveal a dermal lymphohistiocytic infiltration focused around hair follicles.
Treatment
Treatments include topical keratolytics and emollients such as urea, adapalene, salicylic acid, vitamin A, tretinoin, and tacalcitol.
See also
Hook nail
List of cutaneous conditions
References
Further reading
SJ, Friedman (1990). "Lichen spinulosus. Clinicopathologic review of thirty-five cases". Journal of the American Academy of Dermatology. 22 (2 Pt 1). J Am Acad Dermatol: 261–264. ISSN 0190-9622. PMID 2179296. Retrieved 2024-03-19.
Kabashima, R; Sugita, K; Kabashima, K; Nakamura, M; Tokura, Y (2009). "Lichen Spinulosus in an Alcoholic Patient". Acta Dermato Venereologica. 89 (3). Medical Journals Sweden AB: 311–312. doi:10.2340/00015555-0600. ISSN 0001-5555. PMID 19479136.
External links
DermNet
Cleveland clinic