Dysarthria is best described as which of the following?

• A. Slow, clear, articulate speech
• B. Slow and slurred, hesitant, prolonged syllables
• C. Involuntary oscillatory movements of limbs
• D. Loss of the ability to coordinate muscles for complex movements

Answer: (B)

Dysarthria is a motor speech disorder caused by weakness, slowness, or poor coordination of the muscles used for speaking, leading to slower, slurred, and often imprecise articulation with prolonged syllables. The description of slow, slurred, hesitant, and prolonged syllables fits this execution problem in the speech muscles. Other phrases point to different issues: involuntary oscillatory movements of limbs describe a limb movement disorder like tremor or chorea, not a speech execution problem; and difficulty coordinating muscles for complex movements reflects apraxia of speech, a planning or programming deficit rather than the neuromuscular execution affected in dysarthria.