Diss proxy verbal evolutionary or the abbreviation "DVD" is the name speech in childhood (CAS) and evolutionary speech (DAS) also known as? disorder in which the child on speech sounds, phonemes, syllables, and words is in trouble. The cause of this disorder, weakness or paralysis of muscle, but forms in the brain is not able between the members and the muscles related to speech (lips, jaws, etc. language, etc.) the harmony of creation. Babe knows what wants to say, but his brain could not between the movements of the muscles that to express words and letter, are essential., the harmony of creation. The real cause of this disorder is yet to be determined, but some evidence suggests that the reasons may be genetic. what that a lot of people in their families, etc. problems in verbal communication there is. The disease, treatment, definite, and complete. but with the use of appropriate interventions, etc., focused, and ongoing therapy, etc., verbal skills, people with this disorder of motor speech, as substantially be improved.