Well the teething behavior varies widely among babies but most of the babies start teething by the age of 6 months. The two lower central incisors which are commonly known as two front bottom teeth are first to appear in lower jaw. After having central lower front incisors, baby start to develop two top front teeth in the upper jaw as well which are commonly known as upper central incisors.
Here are some classic signs of teething:

•Your baby will start too droll approximately 2 months before the first incisor begins to appear in the lower jaw.

•Teething makes your baby irritable and cranky as well.

•Your baby will have sore and swollen gums as well.

•He will like to chew solid objects before teething.

Lots of parents think that teething may lead to diarrhea and fever but it has proved through research that teething does not cause diarrhea and fever at all. Teething may affect your baby’s gum but t does not have any effect on rest of the body.