Renbök phenomenon in a patient with alopecia areata universalis
Keywords: 
Renbök phenomenon
Koebner phenomenon
Extensive alopecia areata
Issue Date: 
2012
Publisher: 
American Medical Association
ISSN: 
2574-3805
Note: 
Open acces
Citation: 
Garnacho-Saucedo, G.M. (Gloria Maria); Salido-Vallejo, R. (Rafael); Álvarez-López, M.A. (M. Ángeles); et al. "Renbök phenomenon in a patient with alopecia areata universalis". Jama dermatology. 148 (8), 2012, 964 - 965
Abstract
The Renbök phenomenon, or reverse Koebner phenomenon, was first reported in 1991 by Happle et al,1 who described 4 patients with extensive alopecia areata of the scalp with hair growth within plaques of psoriasis. Three additional cases have subsequently been reported,2-4 and the term was later extended to include patients with mosaic phenomena, one with alopecia areata without a nevus flammeus, and another without a congenital nevus.5,6 Whereas the Koebner phenomenon involves psoriasis of traumatic or inflammatory origin, the Renbök phenomenon occurs when some inflammatory process is inhibited by psoriasis.

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