Whether a newborn’s runny nose is a symptom of a cold or not needs to be analyzed on a case-by-case basis. There are many reasons for a newborn’s runny nose, first of all, it is caused by a cold. If the newborn is infected with respiratory viruses, such as rhinovirus and parainfluenza virus, it will cause cold symptoms. The newborn will then experience nasal congestion, runny nose and sneezing. This is a typical cold symptom. Secondly, it is caused by neonatal rhinitis. If the newborn’s runny nose is very long, often more than two weeks or more. The main consideration is that the runny nose is due to neonatal rhinitis and not due to a common viral cold. Finally, it is a temporary phenomenon caused by cold and other stimuli. If a newborn baby is exposed to wind and cold, he or she will have a runny nose for a short period of time. However, if it is just a runny nose, the symptoms will be relieved after keeping the newborn warm. To summarize, a newborn’s runny nose does not necessarily belong to the cold.