Pronunciation problems are disorders involving inadequate joint diction or certain phonemes. Usually from the age of five children and pronounced totally fine without any difficulty all phonemes (although sometimes the "R" may cost a little longer). From that age, if severe difficulties in pronunciation should be evaluated by a specialist to find its cause, among which are: incorrect articulation, or functional dislalia, often due to poor management or operation of the vocal apparatus; hearing, if the child could not hear well understand and learn certain sounds incorrectly; organic, called diglossia, which are malformations or defects in the organs involved in speech, as the palate or lingual frenulum; or other disorders, such as stuttering. Depending on the cause, the speech therapist propose as therapy or treatment for the child, which is based on the realization of exercises to improve muscles used to improve pronunciation and articulation, as well as breathing exercises and expression. When the source is a malformation, it may require surgery to correct.