<prompt> Koebners phenomenon is seen in all exceptPsoriasisWartsTinea corporisMolluscum contagiosum  <response>: Ans. c Tinea corporis. Ref. Harrison, Medicine, 18thCh. 52KOEBNERS PHENOMENON: ISOMORPHIC RESPONSE Epidermal injury may stimulate lesions to subsequently develop in the area of the injured skin. When the injury occurs in streaks, the ensuing papules will develop in linear array - Koebners phenomenon. Koebners phenomenon is best known in psoriasis, it may also occur in other skin diseases like:- Kaposis sarcoma- Lichen planus and Lichen nitidus,- Pityriasis rubra pilaris,- Dariers disease. In all of the cases following trauma, there is a brief incubation period, which is followed by the lesions. In molluscum contagiosum, its a communicable viral disease confined to the skin. Transmission requires direct contact with infected lesions, fomites might also transmit the disease, and experimental transmission in humans has been achieved with an incubation period of 14-50 days. In case of Tinea corporis, the lesions are generally self-limited. Treatment may prevent spread, but there is no association with Kobners phenomenon. 