Bronchitis is an infection or inflammation that occurs in the main airways to the lungs or called bronchi. Bronchitis in children can occur when bacterial or viral infections that cause colds, coughs, and sinusitis spread to the bronchi. When bacteria or viruses have settled and proliferated in the bronchi, the airways will swell, become inflamed, and are filled with phlegm. In addition to bacteria and viruses, bronchitis in children can also be caused by allergies and irritation due to pollution, cigarette smoke, and dust fumes. What are the symptoms? Acute bronchitis will produce the following symptoms. Coughing that lasts for five days or more. Sputum clear, white, yellow, or green. Chest pain, or pain when coughing. Not always accompanied by a fever, although mild fever may occasionally appear. In certain conditions, children must immediately get help from a doctor, that is if there is a fever with temperatures above 38ºC accompanied by loss of appetite, shortness of br