Definition

Noun: A severe motor speech disorder characterized by the partial or total loss of the ability to produce articulate speech. This condition results from damage to the central nervous system, specifically affecting the brain's control over the muscles used for speaking, such as those in the lips, tongue, and jaw.

Usage and Examples

Noun: - The stroke left him with anarthria, making verbal communication extremely difficult. - Anarthria is often assessed by a speech-language pathologist through tests of oral motor control. - Unlike aphasia, which affects language comprehension, anarthria specifically impairs the physical execution of speech.

Advanced Usage

• Clinical Context: The term is primarily used in medical, neurological, and speech-language pathology contexts to describe a specific type of dysarthria (a broader category of motor speech disorders) where speech is utterly absent or reduced to grunts due to profound neuromuscular impairment.
• Differential Diagnosis: It is crucial to distinguish from other disorders like apraxia of speech (a planning disorder) or aphasia (a language disorder).

Variants and Related Words

• Anarthric (adj): Pertaining to or suffering from anarthria.
  • The patient's anarthric condition required the use of an augmentative communication device.

Synonyms

• Aphonia (Note: While sometimes used loosely, specifically refers to loss of voice, often from laryngeal issues, whereas involves the entire speech musculature.)
• Severe Dysarthria

Related Terms and Concepts

• Dysarthria: A broader family of motor speech disorders involving weakness, slowness, or incoordination of the speech muscles; represents the most severe form.
• Apraxia of Speech: A motor speech disorder affecting the brain's ability to plan and sequence the movements needed for speech, distinct from the neuromuscular execution problems in anarthria.
• Aphasia: An impairment of language comprehension and/or production due to brain injury, which is different from the motor impairment of anarthria.

Noun

1. partial or total loss of articulate speech resulting from lesions of the central nervous system