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Measuring Psoriasis Severity at Home
Published on: March 1, 2024
Psoriatic arthritis in Asia
Lai-Shan Tam1, Ying-Ying Leung, Edmund K Li
1Department of Medicine and Therapeutics, The Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
Rheumatology (Oxford, England)
|August 29, 2009
Summary
Geographic variations in psoriatic arthritis (PsA) prevalence exist, with lower rates in Japan compared to global averages. Genetic factors and differing disease patterns, like joint involvement and comorbidities such as atherosclerosis, are noted across ethnic groups.
Area of Science:
- Rheumatology
- Epidemiology
- Genetics
Background:
- Geographic and ethnic variations in disease occurrence offer insights into causes and prevention.
- Psoriatic arthritis (PsA) incidence and prevalence vary significantly worldwide, notably lower in Japan compared to global rates.
- Prevalence of PsA among psoriasis patients is higher in Caucasians (6-42%) than in Asian populations (1-9%).
Purpose of the Study:
- To explore geographic and ethnic variations in psoriatic arthritis (PsA) presentation and comorbidities.
- To investigate potential genetic and environmental factors contributing to differing PsA prevalence.
- To highlight specific clinical features and co-morbidities in Asian PsA patients.
Main Methods:
- Literature review and synthesis of existing epidemiological data on PsA across different countries and ethnic groups.
- Comparative analysis of PsA prevalence, incidence, and clinical manifestations between Caucasian and Asian populations.
- Examination of genetic factors (e.g., HLA distribution) and co-morbidities (e.g., atherosclerosis) in PsA.
Main Results:
- PsA prevalence in China is similar to global figures, but significantly lower in Japan.
- HLA distribution and other genetic determinants likely contribute to ethnic variations in PsA prevalence.
- Polyarthritis in the fourth decade is common in various Asian ethnicities; arthritis mutilans and eye lesions are rare.
- Chinese patients with nail disease and DIP joint involvement face higher risks of joint deformity.
- Premature atherosclerosis is a significant comorbidity in Asian PsA patients, potentially sharing inflammatory pathways with PsA.
Conclusions:
- Ethnic and geographic factors significantly influence psoriatic arthritis prevalence and presentation.
- Genetic diversity, particularly HLA distribution, plays a role in observed prevalence differences.
- Asian PsA patients exhibit distinct clinical patterns and a higher burden of atherosclerosis, necessitating tailored management and further research into shared inflammatory mechanisms.
