Rheological properties of the blood in psoriasis patients during PUVA-therapy.

Rheological properties of the blood in 50 psoriasis patients were studied during PUVA-therapy. The mean rheological indices in half of the patients were above normal before treatment. During the PUVA-therapy the mean indices in this group of patients were near to normal. Bimodal distributions of the obtained indices were connected neither with each other, nor with the form and severity of the disease. Lack of statistical correlation links between quantitative indices of systems defining an aggregate state of the blood leads one to believe that changes in rheological properties of the blood in psoriasis patients before treatment can be connected with the immune status of the major disease. Further research in this field is needed.