Psoriatic arthritis is a chronic inflammatory arthritis that affects about 5-25% of patients with psoriasis. The prevalence varies from 20-420 per 100,000 population across the world, except in Japan where it is 1 per 100,000. In about 80% of cases the presence of psoriasis precedes the onset of psoriatic arthritis. There is not a strong correlation between the severity of psoriasis and the dev...

Psoriatic arthritis (PsA) is a chronic inflammatory arthritis that can cause severe joint deformities and disability. The expected prevalence of inflammatory arthritis among patients with psoriasis has varied from 7% to 40%. Early diagnosis and treatment of PsA is recommended to discourage from disease associated disability and breakdown of work place efficiency. The epidemiological studies are...

A 41 year old male with psoriatic arthritis developed progressive dyspnoea and airflow obstruction following 4 months of intramuscular gold therapy. Open lung biopsy revealed bronchiolitis obliterans of the constrictive type. This case suggests a possible aetiological role for gold in the pathogenesis of constrictive bronchiolitis obliterans, or alternatively an association between psoriatic ar...

Given the potential consequences of joint damage for patients with psoriatic arthritis, we believe that the optimization of screening methods and the investigation of arthritis in patients with psoriasis are a medical priority. It is very useful to identify predictors of arthritis in patients with psoriasis. In fact, there is a consensus among doctors that the large gap between the diagnosis of...

Tofacitinib is an oral Janus kinase inhibitor that is being investigated for psoriasis and psoriatic arthritis. Japanese patients aged 20 years or more with moderate to severe plaque psoriasis and/or psoriatic arthritis were double-blindly randomized 1:1 to tofacitinib 5 or 10 mg b.i.d. for 16 weeks, open-label 10 mg b.i.d. for 4 weeks, then variable 5 or 10 mg b.i.d. to Week 52. Primary end-po...

BACKGROUND Psoriasis, a chronic skin disease with or without joint inflammation, has increased circulating proinflammatory cytokine levels. Vitamin D is involved in calcium homeostasis, bone formation, osteoclastogenesis and osteoclast activity, as well as regulation of immune response. We aimed to study osteoclast differentiation and cytokine secretion of peripheral blood mononuclear cells (PB...

INTRODUCTION Psoriasis is a chronic, immune-mediated inflammatory disease predominantly affecting the skin, with a complex aetiology. Recently it has been suggested that the chronic inflammation of psoriasis may cause metabolic and vascular disorders. The relationship between obesity and psoriatic arthritis (PsA) is not clear, and there are insufficient prospective studies addressing this subje...