Dysarthria
Dysarthria is defined as a defect in the production of speech affecting the volume, rate, tone, or quality of spoken language.
The following table lists the different types of dysarthria and commonly associated conditions.
The following table lists the different types of dysarthria and commonly associated conditions.
| Type | Features | Associated conditions | Localisation |
|---|---|---|---|
| Spastic | Explosive and forceful, at a slow rate | Pseudobulbar palsy, spastic hemiplegia | Upper motor neuron |
| Flaccid | Breathy, nasal voice, imprecise consonants | Myasthenia gravis | Lower motor neuron |
| Hypokinetic | Slow, quiet, with a tremor | Parkinson's disease | Extrapyramidal |
| Hyperkinetic | Variable rate, inappropriate stoppages, strained quality | Huntington's disease, Sydenham's chorea, tardive dyskinesia | Extrapyramidal |
| Ataxic | Rapid, monopitched, slurred | Friedreich's ataxia, alcohol abuse | Cerebellum |
