<prompt> Nikolskys sign is positive in each of the following conditions, EXCEPT:PemphigusToxic epidermal necrolysisstaphylococcal scalded skin syndromePsoriasis  <response>: The Nikolsky phenomenon is positive when the epidermis is dislodged from the dermis by lateral, shearing pressure with a finger, resulting in an erosion. It is an impoant diagnostic sign in acantholytic disorders such as pemphigus or the staphylococcal scalded skin SSS syndrome or other blistering or epidermonecrotic disorders, such as toxic epidermal necrolysis. Ref: 2013. Introduction. In Wolff K, Johnson R, Saavedra A.P. Eds, Fitzpatricks Color Atlas and Synopsis of Clinical Dermatology, 7e. 