Post Herpes Zoster dermatome/s – a therapeutic ground for cutaneous T-cell lymphoma (CTCL) & Stevens–Johnson syndrome/toxic epidermal necrolysis (SJS/TEN)

The term isotopic response was coined by Wolf et al. in 1995 to describe the occurrence of a new skin disease at the site of a previous, unrelated and already healed cutaneous disorder [1]. Dermatome/s that have been infected by herpes zoster virus become breading sites for a subsequent development of heterogeneous skin disorders, the occurrence of which generate the well-defined ‘Wolf’s post-herpetic isotopic response’ [2,3]

The Sparing Phenomenon. A case series of the inverse Koebner and related phenomena

Introduction: The sparing of the involvement of a cutaneous disease in a site that has been previously subjected to a skin disease, congenital nevus or physical insult has been reported in literature by various names, including the inverse Koebner phenomenon.Objectives: To review cases that we have seen and to document the reported cases and unify them with a single term, the “Sparing phenomenon”. Materials and Methods: We report four new examples of this phenomenon and performed a PubMed literature search on related search terms and summarized the reported cases.Results: We report four new cases of this phenomenon. An additional 16 reported cases of the sparing phenomenon were identified. Herpes zoster was the most reported inflammatory disease site followed by; skin irradiation was the commonly documented physical insult. Drug reactions and psoriasis were the most common diseases that spare these sites. The time gap between first and second insult was highly variable.Conclusions: We proposed the term “Sparing phenomenon” to describe the skin disease sparing on an area which was previously subjected to skin disease or physical insult. By introducing this new term to the dermatology glossary, it would be easy to collect and analysis to understand the immuno-pathophsiology of this skin reaction described in various names

Proposed classification for koebner, wolf isotopic, renbok, koebner nonreaction, isotopic nonreaction & other related phenomen.

Students of skin diseases have long noted a variety of disease responses and non-responses to trauma and the presence of structural abnormalities. This article will review the series of these responses including: Koebner phenomenon, Wolf isotopic response, Renbök response, Koebner nonreaction, isotopic nonreaction, and other related skin reactions. Because most of these reported phenomena have similar morphological features the diagnosis is often made on the basis of differences in the clinical presentation. Note that some of the cutaneous reactions of similar phenomena have been described using varied nomenclature, further adding to the confusion. In view of this, we believe that at present there is a robust need to define each cutaneous reaction accordingly and classify the various types of these phenomena under a broad universal term or terms. Respecting the idea of differences might facilitate a better understanding of the pathophysiology of these entities. We then will propose an alternative classification system

Proposed classification for koebner, wolf isotopic, renbok, koebner nonreaction, isotopic nonreaction & other related phenomen

Students of skin diseases have long noted a variety of disease responses and non-responses to trauma and the presence of structural abnormalities. This article will review the series of these responses including: Koebner phenomenon, Wolf isotopic response, Renbök response, Koebner nonreaction, isotopic nonreaction, and other related skin reactions. Because most of these reported phenomena have similar morphological features the diagnosis is often made on the basis of differences in the clinical presentation. Note that some of the cutaneous reactions of similar phenomena have been described using varied nomenclature, further adding to the confusion. In view of this, we believe that at present there is a robust need to define each cutaneous reaction accordingly and classify the various types of these phenomena under a broad universal term or terms. Respecting the idea of differences might facilitate a better understanding of the pathophysiology of these entities. We then will propose an alternative classification system