The three phases of whooping cough-like illness are the initial cough phase (khat phase), the spasmodic cough phase, and the recovery phase. Pertussis-like cough, also known as pertussis-like syndrome, is due to adenovirus or respiratory syncytial virus infection causing clinical symptoms similar to whooping cough, the course of the disease can be divided into three phases:. 1. Initial cough phase (stage 1): Patients present with flu-like symptoms such as runny nose, cough, fever, conjunctival congestion, and sneezing; fever may disappear within 1-3 days of the natural course of the disease, but the cough is persistently worse. In this stage, the main use of benzpheniramine, licorice combination of phlegm and cough treatment. 2. Spasmodic cough (second stage): the typical paroxysmal spasmodic cough, cough continues to worsen, the emergence of light day and heavy night pattern, accompanied by deep inhalation-like chicken sound. At this stage, as long as the main focus on cough relief, you can use nebulized salbutamol to relieve bronchospasm. 3. Remission period (stage 3): the patient spasm cough relief, but there may be no sputum dry cough or cough up a small amount of pus sputum, may appear hoarse with low fever. Pertussis-like cough is contagious and should be isolated during treatment. When suffering from pertussis-like cough, it is necessary to actively seek medical advice and treatment under the guidance of a physician.