Dermatomyositis is an uncommon autoimmune condition involving skeletal muscle characterized by subacute onset of progressive weakness, intramuscular inflammatory infiltrates and the presence of myositis-specific autoantibodies.1 Immune-mediated myopathies may exert some pathogenic effects on the muscle tissue by targeting the microvasculature.1 Capillary inflammation, fragility and loss may contribute to heightened bleeding events in these patients. Here,…
Dermatomyositis (DM) is an idiopathic inflammatory myopathy involving proximal muscle weakness and skin rash. An associated increased risk of malignancy is well established.1 The most frequent malignancies are related to the ovary, endometrium, lung, gastrointestinal tract, prostate, breast and lymphatics.2 On rare occasions, DM has been reported with certain types of non-Hodgkin’s lymphoma, specifically cutaneous…
We report on a 77-year-old patient who was diagnosed with giant cell arteritis (GCA) on histopathology of the submandibular gland and eventually went on to develop classic signs and symptoms of GCA. This observation highlights neck swelling as a rare initial presentation of GCA. Case Presentation A 77-year-old previously healthy man presented to his primary…
A 24-year-old woman presented to our rheumatology office in 2017 with a blotchy purple rash on her arms and legs. She reported no history of miscarriage or blood clots. The rash pattern was concerning for livedo reticularis or livedo racemosa, and she was noted to have an anti-nuclear antibody (ANA) titer of 1:160 with a…
Rheumatologists are in the unique position of diagnosing and treating rare auto-inflammatory and autoimmune diseases. Although systemic lupus erythematosus (SLE) often has textbook presentations, it is a heterogeneous condition with a wide variety of disease manifestations. In 2019, the European League Against Rheumatism and the ACR introduced new classification criteria to help diagnose this condition.1…
The occurrence of opportunistic infections is an established complication in patients diagnosed with systemic lupus erythematosus (SLE). The foremost challenge in such circumstances is differentiating between an exacerbation or progression of SLE, and the effects of the infection itself.1 Toxoplasma gondii is a ubiquitous parasite that often causes an asymptomatic infection in healthy, immunocompetent adults….
Drug-induced lupus erythematosus and ANCA-associated vasculitis (AAV) are both autoimmune conditions associated with the use of hydralazine, a commonly prescribed drug for hypertension and congestive heart failure. Although the pathogenesis is unknown, it is believed that hydralazine alters neutrophil and lymphocyte function and promotes exposure of antigens, leading to the development of anti-neutrophil antibodies (ANCA)…
Hydralazine has been in use as a treatment for hypertension, most notably in heart failure patients, since 1951.1 The drug is a known cause of autoimmune disease, most specifically hydralazine-induced lupus. Hydralazine-induced lupus occurs in 7–13% of those taking the medication.2-4 It often presents with constitutional symptoms, arthritis/arthralgias, cutaneous lesions, serositis, myalgias and/or hepatomegaly. Features…
Our patient was a 33-year-old, 5’2″ Asian woman with a past medical history of systemic lupus erythematosus (SLE). The diagnosis was based on serologies positive for anti-nuclear antibodies (ANAs), as well as antibodies to Sm, RNP and SSA. Her illness included neuropsychiatric and cutaneous involvement. She also had a diagnosis of Hashimoto’s thyroiditis. She presented…
Tumor necrosis factor-α inhibitors (TNFi’s) have emerged as an integral part of therapeutic strategies for several rheumatic diseases. TNF-α is a pro-inflammatory cytokine implicated in the pathogenesis of rheumatoid arthritis (RA), seronegative spondyloarthropathies and inflammatory bowel disease (IBD). It also plays a central role in the immune response to mycobacterial infection. Many biologic agents, particularly…