If your 16-month-old daughter seems to have a cold sore, you should consult a doctor. It is possible for young children to have oral herpes, and it may be associated with stronger symptoms in some cases. While antiviral treatment is not always necessary, it is important to monitor your child for any changes in their general condition. Cold sores typically disappear within a week, but a doctor's evaluation is recommended to confirm the diagnosis and provide appropriate treatment if needed. Treatment usually involves oral medication and should ideally be started within 3 days of the onset of symptoms.
