A few babies begin teething at three to four months, but most don’t start until about six to seven months. Most babies are not troubled by the teething process, but are irritable, eat poorly, may have loose stools, and have trouble sleeping when teeth begin to arrive. Teething does not cause fever or diarrhea. If your baby seems uncomfortable, you may want to give baby TYLENOL® (acetaminophen). Teething toys and biscuits are also helpful. A cold washcloth to chomp on may also help. Teething tablets are not recommended.