Psoriasis is a chronic skin disorder that exhibits three main features: lymphocytic infiltration into the dermis and epidermis, uncontrolled proliferation and abnormal differentiation of keratinocytes. In this study we have evaluated the effect of treatment with WHITE Holographic Bioresonance Method and a resonance-based isotherapeutic remedy on patients affected by chronic psoriasis vulgaris. The WHITE Holographic Bioresonance Method is based on the principles of electrodynamic coherence. By exploiting the phenomenon of bio-resonance, it uses a transfer plate to produce resonance- and light-based isotherapeutic coherent acqueous remedies and gels that emit coherent oscillations which "imprint" the area of psoriasis-affected skin. Levels of proinflammatory cytokines have been evaluated in the plasma of psoriatic patients treated with isotherapeutic remedies. The obtained results demonstrate a positive effect on the natural course of the disease and matched the results obtained by psoriatic patients treated with narrow band UVB. A significant reduction in plasma levels of cytokines involved in pathogenesis of psoriasis has been observed. Our findings may suggest that WHITE Holographic Bioresonance method used in combination with resonance-based isotherapeutic remedy could well be a new useful treatment option for patients with limited psoriatic plaques.