Thrush - An Oral Infection in Baby

Thrush is a common oral infection in infants. Affected infants will have patches of white coating inside the mouth. These white patches can be found on the inside of the cheeks, on the tongue, on the roof of the mouth, lips or gums. Usually these white patches of coating cannot be easily rubbed away. If you force to wipe them away, affected area may bleed or leave behind painful ulcers.

Read further on how to differentiate it from milk residue and how to prevent and treat thrush. 

http://www.babyment.com/infant/thrush.php

Thrush - An Oral Infection

Thrush is a common oral infection in infants. Affected infants will have patches of white coating inside the mouth. This white patches can be found on the inside of the cheeks, on the tongue, on the roof of the mouth, lips or gums. Usually this white patch of coating cannot be easily rubbed away. If you force to wipe it away, the area may bleed or leave behinds a painful ulcer.

You may continue to read this article on some measures that can be taken to alleviate it.
http://www.babyment.com/infant/thrush.php