Mild cases of pertussis, commonly known as whooping cough, generally do not cause diarrhea. Diarrhea is a symptom of the gastrointestinal tract, whereas whooping cough is a contagious respiratory disease caused by a common bacterial infection. It can lead to symptoms such as vomiting, nasal discharge, and tearing due to coughing. The typical symptoms include a cough that sounds like a bark or a crowing sound during inhalation. The main treatment principle is symptomatic treatment, thinning the mucus, and relieving bronchial smooth muscle spasms. During the acute phase, macrolide antibiotics such as erythromycin or azithromycin can be chosen for treatment. (Please use medication under the guidance of a doctor.)