Thank you for writing to us.
The first teeth usually appear at 6 months of age. But it is possible at an early age and some children are born with teeth. Anyway, the phase is temporary and their is not much to worry about. Please see a Doctor if the child's behavior continues to remain changed.
Hope this helps you.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.