Which condition is primarily a language impairment due to brain damage?

• A. Dysarthria
• B. Aphasia
• C. Apraxia of Speech
• D. Dementia

Answer: (A)

Aphasia is when language abilities are impaired due to damage to the brain’s language areas, usually in the left hemisphere. This affects understanding and producing language, including speaking, naming, reading, and writing, while the physical muscles used for speech are not the primary problem. That’s why aphasia is the best answer when the focus is on a language impairment caused by brain injury.

Dysarthria, by contrast, is a motor speech disorder. The muscles used for speech are weak or poorly coordinated, so articulation or voice quality is affected even though the underlying language knowledge is intact. Apraxia of speech is another motor issue, where planning and programming the movements for speech is impaired, causing inconsistent errors despite preserved language knowledge. Dementia involves a progressive decline across multiple cognitive domains, and language problems arise as part of a broader decline rather than from a focal language impairment due to brain damage.