Auditory processing disorder is typically associated with development issues, so it is most prominent in school-aged children. Auditory processing disorder can be misdiagnosed as ADHD or vice versa, often occurs along with dyslexia, and is a common secondary diagnosis in individuals with autistic spectrum disorder (ASD) or autism.
APD can be experienced by those with hearing loss and those experiencing cognitive decline and is estimated to affect about 15% of military veterans due to blast exposure and neurological disorders from brain injuries (i.e., stroke, traumatic brain injury, tumors, epilepsy).