Abstract
We have evaluated the correlation between PASI, Self-PASI (Self-administered Psoriasis Area and Sevirity Index), and the extent of QOL impairment using the psoriasis-specific QOL related index (the Psoriasis Disability Index, PDI). Fifty Japanese psoriasis patients were examined at the outpatient clinic of the Osaka City General Hospital for two months from November 1, 2007 to December 30, 2007. The correlation coefficient of the PASI and Self-PASI was high at 0.61, that of PASI and PDI was 0.34, and that of Self-PASI and of PDI was 0.21. The PDI scores had a higher association with Self-PASI than did the PASI scores. These results show that the Self-PASI would be a valid and useful index for choosing treatment. Furthermore, the PDI was higher in the groups of women complaining of pruritus and severe eruptions involving the scalp. Therefore, the QOL of these groups might be worse than expected from the PASI score or BSA, and they might require intense treatments. These results suggested that the Self-PASI and PDI might be good tools when considering patient-oriented treatments.
