Renbök phenomenon

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The Renbök phenomenon, also known as the reverse Koebner phenomenon, is when one skin condition suppresses another.[1][2]

The term was first used by Happle et al. in 1991.[3] The word "Renbök" is a neologism, made from a reversal of the letters of the name "Köbner".[4]

See also


  1. Harris, J. E.; Seykora, J. T.; Lee, R. A. (2010). "Renbök Phenomenon and Contact Sensitization in a Patient with Alopecia Universalis". Archives of Dermatology. 146 (4): 422–425. doi:10.1001/archdermatol.2010.42. PMC 2888038. PMID 20404233.
  2. Ramot, Y.; Ovcharenko, Y.; Serbina, I.; Zlotogorski, A. (2013). "Renbök phenomenon in an alopecia areata patient with psoriasis". International Journal of Trichology. 5 (4): 194–5. doi:10.4103/0974-7753.130397. PMC 3999649. PMID 24778529.
  3. Happle R, Van Der Steen P, Perret C (1991). "The Renbök phenomenon: An inverse Köebner reaction observed in alopecia areata". Eur J Dermatol. 1: 39–40.
  4. Ito, T; Hashizume, H; Takigawa, M (2010). "Contact immunotherapy-induced Renbök phenomenon in a patient with alopecia areata and psoriasis vulgaris". European Journal of Dermatology. 20 (1): 126–7. doi:10.1684/ejd.2010.0819. PMID 19822483.