Acute bronchitis is an inflammation of the bronchial tubes, which carry air to and from the lungs. This condition often develops following a viral infection, such as the common cold or flu, and can last for several weeks. Patients typically experience a cough that produces mucus, along with other respiratory symptoms. While acute bronchitis is usually self-limiting, it can lead to complications, particularly in individuals with pre-existing respiratory conditions.

Several factors increase the likelihood of developing acute bronchitis, including smoking or exposure to secondhand smoke, frequent exposure to respiratory irritants such as pollution or dust, and having weakened immunity or chronic respiratory diseases like asthma or COPD. Additionally, seasonal factors can play a role, as acute bronchitis tends to be more prevalent during the cold months when respiratory infections are common. Young children and older adults are also at a greater risk due to their less robust immune systems.

The hallmark symptom of acute bronchitis is a persistent cough that may produce clear, yellow, or green mucus. Other symptoms can include a sore throat, wheezing, shortness of breath, and chest discomfort. Patients may also experience fatigue, mild fever, and chills. Symptoms typically resolve within a few weeks, although the cough may linger longer even after other symptoms have subsided.

Acute bronchitis is primarily caused by viral infections, with the common cold and influenza being the most frequent culprits. However, bacterial infections can also contribute, especially in individuals with weakened immune systems. Exposure to irritants such as smoke, dust, or chemical fumes can exacerbate or trigger acute bronchitis in susceptible individuals. The condition often follows an upper respiratory tract infection, leading to inflammation of the bronchial tubes.

Diagnosis of acute bronchitis is primarily clinical, based on the patient's history and physical examination. Healthcare providers will assess the duration and characteristics of the cough, inquire about associated symptoms, and perform a physical examination, often listening for wheezing or abnormal lung sounds with a stethoscope. In some cases, additional tests such as a chest X-ray or sputum culture may be utilized to rule out pneumonia or other complications.

Treatment for acute bronchitis typically focuses on relieving symptoms, as the condition is often self-limiting. Supportive care includes rest, increased fluid intake, and the use of over-the-counter medications such as cough suppressants or pain relievers. In cases where a bacterial infection is suspected, a healthcare provider may prescribe antibiotics. Patients are also advised to avoid irritants and consider using a humidifier to alleviate cough and congestion.

To prevent acute bronchitis, it is advisable to avoid smoking and exposure to secondhand smoke and environmental pollutants. Maintaining good hand hygiene, especially during cold and flu season, can help reduce the risk of viral infections that may trigger bronchitis. Vaccinations for influenza and pneumonia can also be beneficial in preventing respiratory infections that contribute to the development of acute bronchitis.