In clinical practice, if bronchitis is suspected, it is not very difficult to confirm the diagnosis. It generally involves combining clinical symptoms with results from routine blood tests, chest X-rays, or CT scans for a definitive diagnosis. Most cases will show thickened bronchial or lung markings, and an increase in the total number of white blood cells in the blood. The main symptoms include coughing, expectoration, and difficulty breathing. Diagnosis can be confirmed by combining personal medical history, physical signs, and laboratory test results, allowing for timely anti-inflammatory treatment.