Koebner phenomenon indicates the newly appearance of isomorphic lesions at the sites of mechanically stimulated or injured skin. This phenomenon can be seen in various inflammatory, auto-immune, viral, fibrotic, and even tumoral disorders. Also, rheumatic diseases such as lupus erythematosus, dermatomyositis, and rheumatoid arthritis (RA) often present with cutaneous manifestations with isomorp...

The reverse Koebner response or the sparing phenomenon is the non-appearance or disappearance of the skin lesions in patients suffering from psoriasis following cutaneous injury. This paper reports a reverse Koebner phenomenon referring to the complete clearing of the psoriatic skin lesions from the leg of a 63-yearold man following conservative treatment of a tibial fracture.