Differentiating Apraxia of Speech from Dysarthria

Question 1

Apraxia of Speech

Answer 1

Articulation errors occur more often on longer/complex words

Errors are varied and inconsistent

More difficulty producing volitional than reflective automatic utterances

Buccofacial-oral apraxia more likely

Normal muscle strength, muscle tone, and appropriate ROM

Question 2

Dysarthria

Answer 2

Articulation errors occur on all words in all utterances

Errors are consistent and predictable

Buccofacial-oral apraxia less likely

Impaired oral muscle strength, abnormal tone, and limited ROM