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Heart failure (HF) is an increasingly important cause of morbidity and mortality in patients with autoimmune rheumatic diseases. Despite advances in cardiovascular prevention and treatment, HF incidence continues to rise in this population, driven by chronic systemic inflammation, immune-mediated myocardial injury, microvascular dysfunction, fibrosis, and treatment-related cardiotoxicity. Epidemiological studies consistently demonstrate a markedly increased HF risk across a broad spectrum of rheumatic diseases—including rheumatoid arthritis, systemic lupus erythematosus, systemic sclerosis, idiopathic inflammatory myopathies, ankylosing spondylitis, and primary Sjögren syndrome—often manifesting at younger age and independently of traditional cardiovascular risk factors. Subclinical myocardial involvement is frequent and commonly precedes overt HF, with preserved ejection fraction representing the dominant phenotype, particularly in inflammatory arthritis and systemic sclerosis. Advances in speckle-tracking echocardiography, cardiac magnetic resonance, and circulating biomarkers such as natriuretic peptides and cardiac troponins have enabled earlier detection and refined risk stratification. Although anti-inflammatory therapies, including conventional and biologic disease-modifying antirheumatic drugs, may mitigate HF risk, optimal control of traditional cardiovascular risk factors and cautious use of cardiotoxic agents remain essential.