Fever does not occur during teething, but if your baby develops a fever, it is most likely due to pericoronitis of the growing teeth. When a tooth erupts, there is a pocket formed by the gums covering it, which accumulates soft tartar, leading to bacterial growth and pericoronal inflammation, which in turn causes a systemic infection leading to fever. Parents who leave it unattended are likely to aggravate the condition. Therefore, it is important to promptly rinse the baby’s mouth with light salt water, wipe the surface of the teeth, and also take oral anti-inflammatory drugs to actively treat the fever, which usually gets better in about 3-5 days. If your baby is just teething, he or she will not have a fever because there is an inflammation of the teeth that is causing the fever.