Emphysema is a pathological condition in which the airways at the distal end of the terminal fine bronchi (respiratory fine bronchi, alveolar sacs, alveolar ducts, alveoli) become less elastic, overinflated, inflated, and have increased lung volume or are accompanied by destruction of the airway walls. In simple terms, it is caused by overinflation and rupture of the alveoli. So what are the symptoms of emphysema, the following to understand. 1.Symptoms: Most of the disease starts rapidly, often with cold and rain, exertion, viral infection and other triggers, about 1/3 of the disease before the upper respiratory tract infection. The duration of the disease is 7~10 days. 2, chills, high fever: Typical cases start with sudden chills, followed by high fever, body temperature can be as high as 39 ℃ ~ 40 ℃, in the form of fever, often accompanied by headache, generalized muscle aches, reduced food intake. The fever pattern may not be typical after the use of antibiotics, and the old and frail may only have low fever or no fever. 3. Cough and sputum: Initially, it is irritating dry cough, followed by white mucus sputum or sputum with blood, and after 1~2 days, it can cough up mucus blood sputum or rust-colored sputum, or purulent sputum. 4. Chest pain: Most of them have severe lateral chest pain, often pinprick-like, which increases with coughing or deep breathing and may radiate to shoulder or abdomen. In case of lower lobe emphysema, it can stimulate the septal pleura and cause severe abdominal pain, which can be easily misdiagnosed as acute abdominal disease. After getting emphysema, the first thing is to do preventive work in life, not to smoke or quit smoking, appropriate physical activities, enhance physical fitness, and prevent colds. The second is to do respiratory gymnastics, insist on deep breathing exercise in the morning, exercise abdominal breathing, or do chest breathing with intercostal muscle movement. In the daily care work at the same time, early to go to the regular professional hospital on medical treatment.