Objectives To describe the diagnostic spectrum, arthritis persistency and clinical outcomes after 2 years in patients with inflammatory arthritis (IA) of less than 16 weeks' duration. Methods Data from the Norwegian Very Early Arthritis Clinic, a 2-year longitudinal observational study of adults with IA of ≤16 weeks' duration, were used. Exclusion criteria were arthritis due to crystal deposi...

INTRODUCTION We wanted to assess the importance of the levels of anti-citrullinated peptide antibody (anti-CCP) and immunoglobulin M (IgM) rheumatoid factor (RF) in predicting development of persistent arthritis from undifferentiated arthritis (UA), and to investigate whether there is an added predictive value for persistent arthritis in testing for both anti-CCP and IgM RF. METHODS Patients ...

Accepted for publication 9 September 1992 Abstract Acute polyarthritis is an important cause of morbidity in many tropical countries. Classification has often been difficult, with the term tropical polyarthritis used for those in whom a diagnosis could not be made. The implication thatthis is a distinct entity isprobablyincorrect, with likely causes being septic arthritis or post-infective reac...

OBJECTIVE An early diagnosis in patients presenting with arthritis is important to provide information about prognosis and to initiate treatment. The objective of this study was to determine which markers applied in immunohistological analysis of synovial tissue (ST) specimens could be used to differentiate rheumatoid arthritis (RA) from other forms of arthritis. METHODS Synovial biopsies wer...

Objective To describe the prevalence of spondyloarthritis (SpA) and subtypes diagnosed prior to delivery in a nationwide population pregnant women, estimate how SpA was associated with adverse pregnancy-related outcomes. Methods Using Danish Medical Birth Register, we identified 1,199,610 singleton pregnancies (1997–2016). Information on related (ankylosing spondylitis, psoriatic arthritis, rea...

Spondyloarthritides (SpA) are chronic inflammatory rheumatic diseases that usually affect the axial skeleton and may involve entheses and peripheral joints. The main subtypes are ankylosing spondylitis (AS) and psoriatic arthritis (PsA). Other subtypes are reactive arthritis, arthritis associated with chronic inflammatory bowel diseases and undifferentiated axial and peripheral spondyloarthriti...

Inflammatory arthritis is a significant cause of morbidity in the military. In particular the sero-negative spondyloarthritides, which include ankylosing spondylitis, psoriatic arthritis, reactive arthritis, inflammatory bowel disease related arthritis and undifferentiated spondyloarthritis, are especially prevalent in the young male phenotype, which is common in the Armed Forces. It is estimat...

OBJECTIVE Viruses have a role in the pathogenesis of various forms of arthritis. This study aimed at determining whether viral DNA can be detected in joint samples in the early stages of idiopathic arthritides. METHODS Synovial fluid (SF) and synovial tissue (ST) samples were obtained from 73 patients, with undifferentiated arthritis (n=22), rheumatoid arthritis (n=13), spondyloarthropathy (n...