Nailfold Capillaroscopic Changes in Egyptian patients with Psoriatic Arthritis in comparison to Rheumatoid arthritis

Abstract

Psoriatic arthritis (PsA) is a chronic inflammatory disease affecting 0.04% - 0.1% of general population. It can cause physical disability that results from bone erosions and joint destruction. Rheumatoid arthritis (RA) is a complex autoimmune and progressive inflammatory disease that involves the joints and leads to their destruction. The prevalence of rheumatoid arthritis is 0.5%–1.0% in the general population worldwide. Differential diagnosis between PsA and RA may be quite difficult in psoriatic arthritis patients with mild or with no cutaneous manifestations (PsA sine psoriasis) since both of them may present with symmetrical articular involvement.