No systematic reviews were found. Limited evidence suggests that natural sunlight has a significant effect on seborrhoeic dermatitis.39,40 One RCT (n = 48) found improvement in 85% of patients receiving selective ultraviolet phototherapy, and in 76% of the PUVA-treated patients after a mean of 26 treatments.41 In an open prospective study, 18 patients with severe seborrhoeic dermatitis were treated in an open study with narrow-band UVB (TL-01) phototherapy, three times weekly, starting with
70% of the minimum erythema dose, up to maximum of 8 weeks. All patients responded to narrow-band UVB; 12 completed the study, six had complete remission and six had marked improvement.42
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Rosacea and Eczema are two skin conditions that are fairly commonly found throughout the world. Each of them is characterized by different features, and can be both discomfiting as well as result in undesirable appearance features. In a nutshell, theyre problems that many would want to deal with.