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Nonorganic & functional voice disorders

Nonorganic

Nonorganic voice disorders arise not from abnormality of the mechanism itself but instead from abnormal use of the mechanism, most often for conscious or subconscious secondary gain.

Functional

Functional voice disorders arise not from abnormality of the mechanism itself but instead from abnormal use of the mechanism, affected by personality or deficit of vocal skill, without discernible secondary gain.

Disorder of vocal loudness perception

Muscular tension dysphonia (MTD)

Puberphonia

Vocal fry dysphonia

Vocal overdoer syndrome

Vocal self-rapport

Vocal underdoer syndrome

Vocal “vincibility” syndrome

Voice fatigue syndrome