Bronchitis is an infection and inflammation of the bronchial tubes that connect the windpipe to the lungs. There are two main types: acute bronchitis, which usually follows a cold or flu and lasts a few weeks; and chronic bronchitis, a long-term illness characterized by daily cough and mucus production. Bronchitis is caused by viruses and bacteria and risk factors include smoking, air pollution, and respiratory infections. Symptoms include cough, sputum production, shortness of breath, wheezing, and fatigue. Treatment involves antibiotics, cough medicine, bronchodilators, and avoiding irritants. Nursing care focuses on breathing exercises, suctioning, medication administration, and health education.