Speech disorders can affect the way a person creates sounds to form words. Certain voice disorders may also be considered speech disorders.  One of the most commonly experienced speech disorders is stuttering. Other speech disorders include apraxia and dysarthria.

• Apraxia is a motor speech disorder caused by damage to the parts of the brain related to speaking.
• Dysarthria is a motor speech disorder in which the muscles of the mouth, face, or respiratory system may become weak or have difficulty moving.

Some people with speech disorders are aware of what they would like to say but unable to articulate their thoughts. This may lead to self-esteem issues and the development of depression.