The differential diagnosis of bronchial asthma.

[Diagnosis]
1. Bronchiolitis the disease more common in the small 1-year-old baby, more winter and spring disease. Have breathing difficulties and wheezing sound, but its onset slower, bronchiectasis agent had no significant effect. Pathogens for respiratory syncytial virus, followed by parainfluenza virus type 3. However, the current domestic and foreign scholars are of the view that from RSV infection bronchiolitis can also have a specific IgE, involved in allergic type Ⅰ. Since the 1970s, in China's Guangxi, Wenzhou, Shanxi and Beijing had several outbreaks of epidemic, but in general and typical of asthma is not difficult to identify.
2. Asthmatic bronchitis occurs in 1 to 4 years old, marked the first clinical respiratory tract infection, with symptoms increase in breathing and, in general with fever, breathing with the disappearance of inflammation control. Although the clinical be heard wheezing, difficulty breathing but not more serious, non-sudden attack and sudden stop, continuing the course of about a week around the age of growth and reduction in the number of respiratory infections, breathing also reduce the number of times, then reduce the level. But in recent years, many scholars believe that the domestic asthmatic bronchitis asthma is real.
3. Bronchial lymph nodes of the disease can cause intractable cough and asthma-like breath difficulties, but no significant phenomenon of the burst. Tuberculin test positive. X-ray shows a nodular hilar dense shadow around the foreseeable invasion. Individual children with swollen lymph nodes can be oppressed or their trachea with cheese and change, Kuipo into the trachea, can cause more serious symptoms of asthma and breathing difficulties.
4. Bronchiectasis in a secondary infection, bronchiectasis and increase the secretion can also plug in asthma-like breathing difficulties and asthma Wong heard the sound. General under the previous serious lung infection, and repeated atelectasis Kachu a lot of history Nongxing sputum be identified and, if necessary, chest X-ray film and bronchial angiography or CT scan can be diagnosed.
5. Respiratory inhalation of a foreign body within the foreign body after a sudden violent history of choking, and a long-lasting asthma-like breathing difficulties and transform the posture aggravating or mitigating. However, the majority of foreign body airway obstruction in the trachea or larger, performance mainly to Breathing difficulties, asthma, for the performance of breath and difficulty breathing. In addition children with respiratory foreign body, no past history of recurrent breathing space. Foreign bodies such as the side of the trachea, wheezing sound and other signs limited to the side, a special Rattling fashion can hear the sound, and showed signs of asthma bilateral obviously different. After examination and X bronchoscopy not only a clear diagnosis, but also removed foreign bodies.
6. Tropical eosinophilia part of the clinical cases of asthma and similar, the main point for the identification of sputum eosinophil many, eosinophils in the peripheral blood cell count can exceed 10 percent or more, X-ray Yun Wuzhuang shadow shows, a walk-like. Children with a clear history of parasites, with the sea Qunsheng, such as chloroquine drug treatment effective.
7. Cardiac asthma more common in older persons, mostly caused by the left heart failure, common diseases due to hypertension, coronary arteriosclerosis, mitral stenosis, rheumatic heart disease in children caused by incomplete atresia and mitral stenosis, a left ventricular Failure may also arise. Attack and the clinical manifestations of acute asthma attack similar to paroxysmal多见night. Can not sits flat, often Kechu large number of thin foam-like blood or sputum, lung at the end of small wetlands can hear the sound Romania, the expansion of the left heart, valve noise, there can be serious in children with Benma law, such as arrhythmia, not normally Difficult to identify. In addition, bronchial asthma in children with congenital jets still wheezing, pharynx posterior wall abscess, such as gastroesophageal reflux of identification.