There are two distinctive types of bronchitis: acute and chronic. Most cases of bronchitis are acute, caused by a viral infection that dissipates on its own after 7-10 days (though the cough may linger a bit longer). Most cases of acute bronchitis don’t require medical treatment, though this varies depending on the severity of your symptoms and any other medical conditions that you may have. Chronic bronchitis is much more persistent, with its sufferers experiencing symptoms of coughing and mucus production for at least 3 months out of the year, for at least two years. It may be a stand-alone condition, or it can also be a sign of another medication condition taking place, such as chronic obstructive pulmonary disease (COPD).