Muteness

Muteness is an inability or refusal to speak, arising from physical, neurological, psychological, or deliberate causes. It may be lifelong, temporary, or specific to particular situations.

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Speech production: The process of planning and producing spoken language through coordinated brain, breathing, voice, and articulation systems. Separates the act of speaking from understanding language, which can remain intact in muteness.
Anarthria: A severe motor speech disorder in which a person cannot produce articulate speech. It names one neurological route to near-total loss of spoken output.
Speech-language pathology: A clinical field that assesses and treats communication and swallowing disorders. Speech-language pathologists evaluate speech abilities and support communication across different causes of muteness.
Aphonia: The loss of voice, usually because the vocal folds cannot produce normal sound. A person with aphonia may still articulate whispered speech, unlike broader uses of muteness.
Aphasia: A language disorder caused by brain damage that affects speaking, understanding, reading, or writing. Language impairment can affect speech, but muteness does not by itself establish aphasia.
Selective mutism: An anxiety disorder in which a person consistently cannot speak in particular social situations despite speaking elsewhere. Its situation-specific pattern distinguishes anxiety-related silence from a global speech impairment.
Speech-generating device: An electronic tool that produces spoken output from text, symbols, or other user input. It can provide an audible voice without requiring the user to speak.
Speech disorder: A condition that affects the production or clarity of speech sounds. This broader category includes impairments that reduce speech without making speech wholly absent.
Dysarthria: A motor speech disorder in which weakness or impaired coordination makes speech difficult to produce clearly. It can make speech unintelligible or severely limited without eliminating language ability.
Catatonia: A neuropsychiatric syndrome involving marked changes in movement, responsiveness, and behavior. Mutism can occur as one feature of catatonia, alongside other changes in movement or responsiveness.