Twenty seven psoriatics and six patients with parapsoriasis (18 wales, 15 females) have been treated by narrow band iJVB (311 nm) in cabine EMLY (Dixwell) at the Department of Dermatology (Faculty Hospital) in Hradec Králové during the period 1996-1999 years. Their slon disease was lasting from six weeks ti1155 years. Intensive phase (3-5 times weekly) of phototherapy was given to each patient, only 4 patients with psoriasis and 4 patient with parapsoriasis received also maintenance therapy ranging from twice in a week till once in a fortnights. Total sum of therapeutical sessions varied from 5 up to 26 (68 irradiations in a tase of maintenance therapy). A cumulative dose for clearing therapy was from 1.58 till 27.4 J/cm2 (average 16.6 J/cm2). Total cumulative dose in maintenance therapy was 54.4 J/cm2 (none of the single dose was over 1.5 J/cm2). The average PASI of psoriatics after clearing therapy decreased by 45.4 %. Twenty two percents of patients with psoriasis of the disease returned to our department with an early relaps (within two months). All the patients with parapsoriasis improved though an early relaps within two months appeared in a half of patients.

        Key words: narrow band iJVB (311 nm) phototherapy - psoriasis - parapsoriasis