What causes speech problems?

Normal speech may seem effortless, but it's actually a complex process that requires precise timing, nerve, and muscle control. When we speak, we must coordinate many muscles from various body parts and systems, including the larynx, which contains the vocal cords; the teeth, lips, tongue, and mouth; and the respiratory system. The ability to understand language and produce speech is coordinated by the brain. So a person with brain damage from an accident, stroke, or birth defect may have speech and language problems. Apraxia is thought to be due to a brain impairment that may or may not show up on brain magnetic resonance imaging (MRI) tests. Some people with speech problems, particularly articulation disorders, may have hearing problems. Even mild hearing loss may have an impact on how a person reproduces the sounds they hear. Certain birth defects, such as a cleft palate, can interfere with someone's ability to produce speech. When a person has a cleft palate there is a hole in ...  more