Oftentimes, parents mistake teething for illness. The fussiness can definitely seem like symptoms of something much greater. Of course, always be cautious and let an expert diagnose your child if you are concerned.
Most babies begin teething around 4 to 6 months and teething is usually complete at 2 1/2 years old. Baby teeth remain in place until permanent teeth begin replacing them around age 6.
Caring for Baby's New Teeth