Rheumatoid Arthritis in overlap is when RA is found with other autoimmune diseases or chronic illness.
RA is often found in overlap with other connective tissue diseases such as scleroderma, lupus, and polymyositis/dermatomyositis. It can also be found with other diseases such as thyroiditis, fibromyalgia, and sjogren's. (Also see What is Scleroderma?, Lupus, Dermatomyositis/Polymyositis, Thyroid Diseases, Fibromyalgia, Sjogren's, and Overlap Syndromes/MCTD/UCTD)
Comorbidity in psoriatic arthritis (PsA) and rheumatoid arthritis (RA). High rates of comorbidity were found and the prevalence of depression, cardiovascular risk factors and other comorbidities were higher in PsA than RA participants. PubMed, Intern Med J, 07/26/2018. (Also see Psoriasis and Psoriatic Arthritis)
Anti-CCP antibodies and rheumatoid factor (RF) in systemic sclerosis: Prevalence and relationships with joint manifestations. The prevalence of RF and anti-CCP antibodies is relatively high in SSc, and joint involvement occurs frequently. PubMed, Adv Clin Exp Med, 07/19/2018. (Also see Antibodies)
Prevalence of overlap of antineutrophil cytoplasmic antibody associated vasculitis (AAV) with systemic autoimmune diseases: an unrecognized example of poliautoimmunity. The most common AAV phenotype was renal–limited vasculitis, and the most frequent overlap disease was rheumatoid arthritis. PubMed, Clin Rheumatol, 07/14/2018. (Also see Vasculitis)
Joint damage is amplified in rheumatoid arthritis (RA) patients with positive thyroid autoantibodies (TAbs). Our data showed that joint destruction was amplified in RA patients with an elevated presence of TAbs, which supports the importance and necessity of TAbs and thyroid function screening and monitoring in RA patient management in clinical practice. PubMed, PeerJ, 2018 Jan 4;6:e4216. (Also see Autoimmune Thyroid Diseases)
Short–course tocilizumab (TCZ) increases risk of hepatitis B virus (HBV) reactivation in patients with rheumatoid arthritis: a prospective clinical observation. To identify the exact risk of TCZ on HBV infection and the prognosis of TCZ–related HBV reactivation, further studies with larger sample sizes and fewer confounding factors are needed. PubMed, Int J Rheum Dis, 02/03/2017. (Also see Clinical Trials and Liver Involvement)
Prevalence of hypothyroidism in rheumatoid arthritis and its correlation with disease activity. Thyroid function test should be included in clinical evaluation of RA patients. PubMed, Trop Doct, 2017 Jan;47(1):6-10. (Also see Thyroid Diseases)
Comorbidity in rheumatoid arthritis. As a part of strategies to improve further the management of patients with RA, multidisciplinary collaboration for prevention and early detection of comorbidities is of major importance. PubMed, Swiss Med Wkly, 2016 Apr 5;146:w14290.
Salivary Gland Ultrasonography (US) as a Diagnostic Tool for Secondary Sjögren Syndrome (sSS) in Rheumatoid Arthritis (RA). Salivary gland US may aid the diagnosis of sSS in patients with RA. PubMed, J Rheumatol. (Also see Diagnosis of Sjögrens)
Clinical and laboratory features of overlap syndromes of idiopathic inflammatory myopathies associated with systemic lupus erythematosus (SLE), systemic sclerosis (SSc), or rheumatoid arthritis (RA). The clinical manifestations of dermatomyositis/polymyositis were identified simultaneously with SSc and RA in the majority of cases, in contrast to identification in the SLE group. PubMed, Clin Rheumatol. (Also see Lupus in Overlap and Myopathy and Myositis)
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