Der Hautarzt; Zeitschrift für Dermatologie, Venerologie, und verwandte Gebiete
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Disorders of anatomical variants of the nails are often seen in clinical practice. Their correction identification and interpretation are essential dermatological skills. ⋯ The nail plate, nail bed and periungual tissue may also be affected. Longitudinal melanonychia is especially important as a possible clue to subungual melanoma.
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Solar urticaria serves as a model to illustrate the photodiagnostic approach in rare photodermatoses and to demonstrate how patients can be effectively helped by prophylactic and therapeutic intervention. To accomplish these tasks, advanced knowledge and experience in photodermatology is required, along with equipment which is often available in specialized centers only. A list is attached listing the dermatology departments with photodiagnostic units in Germany, Austria, and Switzerland.