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Diagnosing Dysarthria

Dysarthria can be diagnosed by a physician or a speech-language pathologist based on an assessment of a person's symptoms and possible underlying causes. A speech-language pathologist may have a patient perform some simple tasks (blowing out a candle, biting the lower lip, and sticking out the tongue) to determine muscle strength, accuracy, and motion. Other tests involve repeating words and sentences, singing, counting and other activities that enable the therapist to detect lost vowel sounds, breathiness, and slowed or slurred speech.