<unk>  (APD), rarely known as King-Kopetzky syndrome or<unk>  disability with normal hearing (ADN), is a neurodevelopmental disorder affecting the way the brain processes<unk>  information. Individuals with APD usually have normal structure and function of the outer, middle, and inner ear (peripheral hearing). However, they cannot process the information they hear in the same way as others do, which leads to difficulties in recognizing and interpreting sounds, especially the sounds composing speech. It is thought that these difficulties arise from dysfunction in the central nervous system. It is highly prevalent in individuals with other neurodevelopmental disorders, such as Attention Deficit Hyperactivity Disorder, Autism Spectrum Disorders, Dyslexia, and Sensory<unk>  Disorder. The American Academy of Audiology notes that APD is diagnosed by difficulties in one or more<unk>  processes known to reflect the function of the central<unk>  nervous system. It can affect both children and adults. Although the actual prevalence is currently unknown, it has been estimated to be 2–7% in children in US and UK populations. APD can continue into adulthood. Cooper and Gates (1991) estimated the prevalence of adult APD to be 10 to 20%. It has been reported that males are twice as likely to be affected by the disorder as females, and that prevalence is higher in the elderly and increases with age.
Auditory processing disorder
Olfactory fatigue
Vibroacoustic disease
Olfactory reference syndrome
Auditory fatigue
Cortical deafness
Speech disorder
Post-lingual deafness