Diarrhea is not necessarily new coronavirus pneumonia. The protocol suggests that very few cases of novel coronavirus pneumonia will have diarrhea. However, it is true that some patients have been found to have receptors for the novel coronavirus in their intestines, so it is theoretically possible that it could invade the digestive tract and possibly cause diarrhea, but this symptom is relatively rare. The main symptoms of novel coronavirus pneumonia are fever, cough, mainly dry cough, and in some cases malaise, headache, sore throat, and in a few cases diarrhea and conjunctivitis. If there are other symptoms and diarrhea may have to consider the new crown infection. However, the cause of the diarrhea should be determined by combining the epidemiologic history with whether or not there has been contact with the infected person and whether or not the person has been to an infected area. The probability of considering neo-coronavirus pneumonia solely on the basis of diarrhea symptoms is still very low. If there are no respiratory symptoms and only diarrhea, it may be more likely that the infection is from the digestive tract and should be evaluated by a medical professional rather than diagnosed by oneself. Source: Dr. Yurai