Polymyositis and dermatomyositis would not have lung damage

As early as 1956 foreign discovered polymyositis and dermatomyositis with interstitial lung changes. The disease can be complicated by interstitial lung disease occurred in all age groups; more common in women aged 20 to 40; clinical performance as interstitial lung disease can be acute or chronic. Lung disease and myasthenia gravis There was no correlation between the degree. Acute-type performance as acute fever, breathing difficulties, dry cough, cyanosis, and then respiratory failure and poor prognosis. Chronic onset of misprision of slow progress, the patient may appear to respiratory difficulties, dry cough and easy to secondary infection, and a small amount of blood, 10. Early signs of lung disease often not obvious, X-ray inspection of 5% to 10% of the patients have pulmonary inflammation, interstitial pneumonia, lung fibrosis, and so on. Pulmonary function tests showed that lung function decline, such as reduced lung capacity. Lung biopsy, high-resolution CT scan will help early diagnosis of lung diseases. The current study found that patients with interstitial Fei Ji, polymyositis and dermatomyositis patients 50 percent to 70 percent of J0-1 antibody positive. Because lung damage seriously affect the quality of life and prognosis of patients and those with poor prognosis lung infection, the polymyositis and dermatomyositis patients should pay attention to the treatment of pulmonary diseases, the prevention of respiratory tract infection.