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This is regarded as a localised form of atopic eczema in which there are well demarcated areas of chronic lichenified dermatitis due to primary excessive scratching (1). It is more common in adults, with women being affected more often than men. There is frequently a personal or family history of atopy. It is relatively uncommon and should be diagnosed only once other more common causes such as contact dermatitis have been excluded
Triggers of the condition include (2):
The condition may also develop superimposed on various anogenital conditions such as candidiasis, psoriasis, tinea cruris, lichen sclerosus, and neoplasia (2).