4) Lung diseases
Lung diseases are considered complications of rheumatoid arthritis. Fortunately, few RA patients experience pulmonary diseases. recent studies estimated that 10% of rheumatoid patients will develop pulmonary fibrosis. Pulmonary disorders resulted from chronic inflammatory diseases as rheumatoid arthritis include pulmonary nodules, Pleurisy (inflammation of layer covering lungs), and interstitial lung disease. Rheumatologists say that prolonged joint inflammation double the risk of getting lung disease which may interfere with normal breathing.