RT Journal Article
SR Electronic
T1 Prevalence and Clinical Characteristics of Psoriatic Arthritis in Japan
JF The Journal of Rheumatology
JO J Rheumatol
FD The Journal of Rheumatology
SP 1439
OP 1442
DO 10.3899/jrheum.141598
VO 42
IS 8
A1 Yuri Ohara
A1 Mitsumasa Kishimoto
A1 Naoho Takizawa
A1 Kazuki Yoshida
A1 Masato Okada
A1 Hikaru Eto
A1 Gautam A. Deshpande
A1 Christopher T. Ritchlin
A1 Atsushi Tanaka
A1 Mari Higashiyama
A1 Kazuo Matsui
A1 Shigeyoshi Tsuji
YR 2015
UL http://www.jrheum.org/content/42/8/1439.abstract
AB Objective. To investigate the prevalence of psoriatic arthritis (PsA) in Japanese patients with psoriasis.Methods. A multicenter, noninterventional, retrospective cross-sectional study was conducted at 3 tertiary care centers in Japan. PsA was diagnosed by rheumatologists based on clinical findings. Prevalence of PsA, clinical characteristics, comorbidities, and treatment patterns were examined.Results. PsA was identified in 431 of 3021 patients with psoriasis, with a mean prevalence of 14.3% (range, 8.8–20.4%). No large differences between these results and previous reports from Western countries were observed in arthritis distribution, skin disease type, or treatment selection.Conclusion. The prevalence of PsA in patients with psoriasis in Japan approaches 20% in some areas, similar to that observed in Western countries, and is higher than previously reported in Asia. Clinical features including age, sex, age at onset, and manifestation patterns were also similar to those reported in the West.