Localized neurodermatitis (lichen simplex)
The skin is damaged as a result of repeated rubbing or scratching, as a habit or in response to stress, but there is no underlying skin disorder.
Usually occurs as a single fixed itchy lichenified plaque (Fig. 7.28). Favourite areas are the nape of the neck in women, the legs in men, and the anogen-ital area in both sexes. Lesions may resolve with treatment but tend to recur either in the same place or elsewhere.
None are usually needed.
Potent topical steroids or occlusive bandaging, where feasible, help to break the scratch–itch cycle. Tran-quillizers are often disappointing.
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