(chronic bronchitis) A type of chronic obstructive pulmonary disease characterized by chronic inflammation in the bronchial tree that results in edema, mucus production, obstruction, and reduced airflow to and from the lung alveoli. The most common cause is tobacco smoking. Signs and symptoms include coughing with excessive mucus production, and shortness of breath.

(chronic bronchitis) Chronic inflammation of the bronchi.

(chronic bronchitis) Condition characterized by persistent coughing, increased secretion from the bronchial mucosa, obstruction of the respiratory passages, scanty or profuse expectoration, and necrosis and fibrosis of the respiratory tract.

(chronic bronchitis) Chronic bronchitis is a type of COPD (chronic obstructive pulmonary disease). COPD is a group of lung diseases that make it hard to breathe and get worse over time. The other main type of COPD is emphysema. Most people with COPD have both emphysema and chronic bronchitis, but how severe each type is can be different from person to person. Chronic bronchitis is inflammation (swelling) and irritation of the bronchial tubes. These tubes are the airways that carry air to and from the air sacs in your lungs. The irritation of the tubes causes mucus to build up. This mucus and the swelling of the tubes make it harder for your lungs to move oxygen in and carbon dioxide out of your body. The cause of chronic bronchitis is usually long-term exposure to irritants that damage your lungs and airways. In the United States, cigarette smoke is the main cause. Pipe, cigar, and other types of tobacco smoke can also cause chronic bronchitis, especially if you inhale them. Exposure to other inhaled irritants can contribute to chronic bronchitis. These include secondhand smoke, air pollution, and chemical fumes or dusts from the environment or workplace. Rarely, a genetic condition called alpha-1 antitrypsin deficiency can play a role in causing chronic bronchitis. The risk factors for chronic bronchitis include: Smoking. This the main risk factor. Up to 75% of people who have chronic bronchitis smoke or used to smoke.; Long-term exposure to other lung irritants, such as secondhand smoke, air pollution, and chemical fumes and dusts from the environment or workplace.; Age. Most people who have chronic bronchitis are at least 40 years old when their symptoms begin.; Genetics. This includes alpha-1 antitrypsin deficiency, which is a genetic condition. Also, smokers who get chronic bronchitis are more likely to get it if they have a family history of COPD. At first, you may have no symptoms or only mild symptoms. As the disease gets worse, your symptoms usually become more severe. They can include: Frequent coughing or a cough that produces a lot mucus; Wheezing; A whistling or squeaky sound when you breathe; Shortness of breath, especially with physical activity; Tightness in your chest. Some people with chronic bronchitis get frequent respiratory infections such as colds and the flu. In severe cases, chronic bronchitis can cause weight loss, weakness in your lower muscles, and swelling in your ankles, feet, or legs. Your health care provider may use many tools to make a diagnosis: A medical history, which includes asking about your symptoms; A family history; Various tests, such as lung function tests, a chest x-ray or CT scan, and blood tests. There is no cure for chronic bronchitis. However, treatments can help with symptoms, slow the progress of the disease, and improve your ability to stay active. There are also treatments to prevent or treat complications of the disease. Treatments include: Lifestyle changes, such as Quitting smoking if you are a smoker. This is the most important step you can take to treat chronic bronchitis.; Avoiding secondhand smoke and places where you might breathe in other lung irritants; Ask your health care provider for an eating plan that will meet your nutritional needs. Also ask about how much physical activity you can do. Physical activity can strengthen the muscles that help you breathe and improve your overall wellness.; Medicines, such as Bronchodilators, which relax the muscles around your airways. This helps open your airways and makes breathing easier. Most bronchodilators are taken through...

A subcategory of CHRONIC OBSTRUCTIVE PULMONARY DISEASE. The disease is characterized by hypersecretion of mucus accompanied by a chronic (more than 3 months in 2 consecutive years) productive cough. Infectious agents are a major cause of chronic bronchitis.