Pediatric asthma, refers to a series of clinical symptoms such as cough, wheezing and excessive sputum caused by a highly sensitive reaction of the bronchi to certain foreign substances in allergic individuals, resulting in bronchospasm, edema and congestion of the bronchial mucosa, and increased endobronchial secretion. The onset of pediatric asthma is either acute or slow. Infants and children often have 1 to 2 days of upper whistle infection symptoms before the onset of asthma, including nasal itching, sneezing, runny nose, eye rubbing, nose rubbing and other manifestations, and may have a pronounced cough and wheezing. Older children tend to have a sudden onset, often starting with a bout of coughing, followed by wheezing and difficulty in breathing. It is difficult to diagnose asthma in children under 2 years of age because many conditions other than asthma can cause shortness of breath or wheezing sounds in babies. In fact, viral infections of the whistle tract are probably the most common cause of asthma in babies. However, if your baby coughs a lot, has allergic reactions or eczema, and has a family history of asthma, allergic reactions or eczema (especially if both you and your husband have a history of these conditions), your baby is likely to have asthma. Babies who are exposed to cigarette smoke before or just after birth are also prone to asthma. Your doctor will examine your baby and take a detailed medical history (including family health history) for diagnosis.