A speech disorder is an impairment of the articulation of fluency, speech sounds, and/or voice. These are disorders of motor speech production. They can be present from birth (congenital) or resulting from other causes (acquired); such as a head injury or illness).    The brain, decides what message it wishes to send, it then sends a series of signals to the speech muscles, telling each what to do in order to move muscles. The muscles then coordinate to produce the series of sounds intended. Disorders may include the following areas; highlight the appropriate label to study more about speech disorders.