Can dermatomyositis cause interstitial pneumonia?

Dermatomyositis can cause interstitial pneumonia, also known as diffuse pulmonary interstitial fibrosis, which refers to inflammation and fibrosis of interstitial lung cells due to various causes. Dermatomyositis is an autoimmune disease that can lead to systemic disorders, including skin and muscle involvement. In the lungs, it primarily manifests as pulmonary interstitial fibrosis. The pulmonary interstitial fibrosis caused by dermatomyositis is typically extensive and often severe. Recurrent exacerbations of dermatomyositis are frequently accompanied by worsening interstitial pneumonia, which may rapidly progress to respiratory failure within a short period. For dermatomyositis patients diagnosed with interstitial pneumonia, treatment options include cytotoxic agents such as glucocorticoids, methylprednisolone, and prednisone, selected according to disease severity. Symptomatic treatments should also be provided based on clinical manifestations, such as antitussive, expectorant, and bronchodilator therapies. If acute infection occurs, antibiotic therapy is required.