What causes apraxia of speech?
Acquired apraxia results from brain damage to those areas of the brain that control the ability to speak. Conditions that may produce acquired apraxia include head trauma, stroke, or a brain tumor. Experts do not yet understand what causes childhood apraxia of speech. Some scientists believe that it results from signaling problems between the brain and the muscles used for speaking. Ongoing research is focusing on whether brain abnormalities that cause apraxia of speech can be identified. Other research is looking for genetic causes of apraxia. Some studies are trying to determine exactly which parts of the brain are linked to the condition.