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Sweet syndrome also termed acute febrile neutrophilic dermatosis is characterized by the abrupt onset of fever, leukocytosis and demarcated papules and nodules, which show dense neutrophilic infiltrates in histopathology. This syndrome is often associated with malignant and immunological conditions. Treatment with systemic glucocorticoids is successful. In the following we describe a case of a 66 year-old woman patient, who had skin problems after being reoperated for umbilical hernia.

Dermatological use of photodynamic therapy and photodynamic diagnostics is reviewed in this paper. Principle, practice, photosensitisers, indications and side effects are described.

Only in the last years the recognition of the solar radiation danger has been glowing. The rising curve of the skin cancer makes it obvious mainly for the medical experts and it is the high time to warn the endangered laymen. There is a great quantity of the contemporary "photopathological" knowledge but there is still a long way to go. This short synopsis of the very last publications intends to renew the ultraviolet comprehension of the medical professionals in order to share it with their patients.