Which type of dysarthria involves irregular speech and incoordination?

Ataxic dysarthria is characterized by irregular speech patterns and incoordination due to damage to the cerebellum or its pathways. This type of dysarthria often results in a disrupted rhythm and timing of speech, causing the individual to produce speech that may be slurred, imprecise, or have variable articulation. The incoordination can manifest as inconsistent rate and loudness, leading to a distinctive quality that sets ataxic dysarthria apart from other types.

In contrast, flaccid dysarthria typically leads to weak, breathy speech due to lower motor neuron damage, and spastic dysarthria is marked by a harsh, strained voice as a result of upper motor neuron damage, both of which do not inherently include the irregularities seen in ataxic dysarthria. Dyskinetic dysarthria, associated with involuntary movements, presents a different set of challenges related to speech intelligibility but does not primarily emphasize the irregularities rooted in incoordination as seen in ataxic dysarthria.