See What HealthDay Can Do For You
Contact Us

Vitamin D Insufficiency Prevalent in Psoriatic Arthritis

No seasonal, geographic variation seen in vitamin D levels in patients with psoriatic arthritis

MONDAY, July 11 (HealthDay News) -- Patients with psoriatic arthritis (PsA) have a high prevalence of vitamin D insufficiency, with no evidence of seasonal or geographic variation or association between vitamin D levels and disease activity, according to a study published online July 11 in Arthritis Care & Research.

Zahi Touma, M.D., from the Toronto Western Hospital, and colleagues investigated the prevalence of vitamin D deficiency and insufficiency in 302 patients with PsA, its seasonal and geographic variation, and the possible correlation with disease activity. The study was conducted in a northern geographic area (North) and a subtropical region (South), from March to August 2009. A total of 258 participants were assessed in winter and 214 in summer, with most participants assessed in both seasons. Demographic and clinical data, skin prototype, and serum 25-hydroxyvitamin D (25[OH] vitamin D) levels were measured for the participants.

The investigators found that, in the winter, 25(OH) vitamin D levels were insufficient in 55.7 and 50.9 percent of patients in the North and South locations, respectively; and, in the summer, levels were insufficient in 58.6 and 62.2 percent of patients in the North and South, respectively. No association was observed between vitamin D levels, race, employment status, skin phototype, seasonal and geographic interaction, or disease activity in summer or winter. There was no association between disease activity in summer and vitamin D levels in winter.

"A high prevalence of vitamin D insufficiency among PsA patients was found. There was no seasonal variation in 25(OH) vitamin D levels among PsA patients in the southern and northern sites. No association could be established between disease activity and vitamin D level," the authors write.

Abstract
Full Text (subscription or payment may be required)

Physician's Briefing

HealthDay

HealthDay is the world’s largest syndicator of health news and content, and providers of custom health/medical content.

Consumer Health News

A health news feed, reviewing the latest and most topical health stories.

Professional News

A news feed for Health Care Professionals (HCPs), reviewing latest medical research and approvals.