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Hand dermatitis is a socially significant health problem. This review provides a discussion on the clinical features and patterns as well as the differential diagnosis of hand dermatitis, because these are essential for proper diagnosis in clinical practice. The morphology, however, is poorly related to the etiology in chronic cases. In all cases of chronic hand dermatitis, a full diagnostic examination should be undertaken and the etiology should be clarified and addressed in the treatment concept, instead of just moving directly from a morphological diagnosis to therapy. Preventive measures should be included in the treatment concept according to etiology. A stepwise approach for escalating therapy is advised, including basic topical therapy, topical corticosteroids, calcineurin inhibitors, as well as phototherapy and systemic therapy with corticosteroids, alitretinoin, cyclosporine, methotrexate, azathioprine, and others.

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Due to the ease of skin accessibility, a large variety of invasive and noninvasive in vitro and in vivo methods have been developed to study barrier function. The measurement of the transepidermal water loss (TEWL) is most widely used in clinical studies. The different methods of determining TEWL, as well as skin hydration, skin pH, tape stripping and other modern less widely used methods to assess skin barrier function, are reviewed, including Raman spectroscopy and imaging methods such as optical coherence tomography and laser scanning microscopy. The modern imaging methods are important developments in the last decades which, however, determine the structure and, hence, cannot replace the measurement of TEWL in questions related to function.

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Irritant contact dermatitis may develop through the tandem effects of long-term glove occlusion and the accumulation of barrier damage from hand washing, even when mild hand cleansers are employed.

Background: Exposure to solar ultraviolet (UV) radiation is a known and controllable risk factor for skin cancer. Objective: To study the UV exposure and protection behavior of the general population. Methods: Structured interview survey. Results: A random sample of 865 volunteers from the EDEN (European Dermato-Epidemiology Network) Fragrance Study cohort was recruited. The individual skin type did not influence the occupation or leisure. The proportion of people who regularly used sunscreens was lower in the oldest age groups, where the risk of skin cancer is highest. Women used sunscreens significantly more frequently than men did and were more likely to have their moles checked by a specialist. Conclusions: A demand for public information on the risk factors for skin cancer and the role of protection was demonstrated by our study. The subpopulation of aged men represents a relevant target group for educational public campaigns on skin cancer risk avoidance.