http://www.nidcd.nih.gov/health/voice/apraxia.asp
National Institute on Deafness and Other Communication Disorders
Apraxia of speech, also known as verbal apraxia or dyspraxia, is a speech disorder in which a person has trouble saying what he or she wants to say correctly and consistently. It is not due to weakness or paralysis of the speech muscles (the muscles of the face, tongue, and lips). This site helps you find more information about the causes, symptoms, diagnosis, and treatments.