Acute bronchitis is a relatively common disease. The common symptoms include coughing and expectoration. Typically, it begins with a dry cough, or with a small amount of mucous sputum, which gradually turns into mucopurulent or purulent sputum, and the amount of sputum gradually increases. The coughing may worsen, and occasionally, the sputum may be tinged with blood. Some patients may also experience fever and wheezing. Generally, coughing and expectoration can last for two to three weeks.