Children typically begin to erupt a tooth between the 6th and 8th month of life. Signs of teething are: drooling, irritability, gum swelling and sensitivity, sleeping problems, refusing food, the urge to bite on hard objects and possibly a low grade fever. The discomfort that results from teething is due to the pressure exerted on the tissue in the mouth, called the periodontal membrane, as the teeth erupt.
Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.