The baby of 4 half moon has a bit runny nose today, be a cold

Four and a half months of baby runny nose, may be caused by a cold, usually with the baby by the cold stimulation, need to do a good job of baby warm work, appropriate amount of warm water to feed the baby to drink, can promote the baby's discomfort symptoms to ease; if the condition is serious, you need to take heat-clearing and detoxifying drugs for treatment.