A critical review of King-Kopetzky syndrome: Hearing difficulties, but normal hearing?

@article{Zhao2007ACR,
  title={A critical review of King-Kopetzky syndrome: Hearing difficulties, but normal hearing?},
  author={Fei Zhao and Dafydd Stephens},
  journal={Audiological Medicine},
  year={2007},
  volume={5},
  pages={119 - 124}
}
King-Kopetzky syndrome (KKS) is the condition in which an individual complains of having difficulties understanding speech in background noise but has normal hearing thresholds on pure tone audiometry. KKS is a relatively common condition and recognized as a clinically unique group in the audiological or ENT clinics (about 1–10%). The absence of any abnormal audiometric findings to explain their hearing difficulties leaves the clinicians or audiologists with a diagnostic dilemma and presents… 
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References

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TLDR
In a study on 110 consecutive patients with King-Kopezky syndrome referred to the Welsh Hearing Insitute, subjects were subdivided into seven subcategorization based on sensitized measures of auditory dysfunction and on psychological assessment, which provides further understanding of the basis ofKing-Kopetzky syndrome.
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TLDR
It is suggested that Audioscan notches between 500 and 3,000 Hz may represent a fine hearing deficit as an indicator of mild auditory dysfunction in patients with King-Kopetzky syndrome.
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TLDR
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TLDR
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TLDR
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TLDR
Decreases in DPOAE level appear to represent evidence of minor cochlear pathology, and provide a pathological basis for the difficulty of hearing speech in the presence of background noise, which characterizes King-Kopetzky syndrome.
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