Auditory processing disorder (APD) is a hearing problem that affects about 5% of school-aged children. Kids with this condition, also known as central auditory processing disorder (CAPD), can't process what they hear in the same way other kids do. This is because their ears and brain don't fully coordinate. Something interferes with the way the brain recognizes and interprets sounds, especially speech. With the right therapy, kids with APD can be successful in school and life. Early diagnosis is important. If the condition isn't caught and treated early, a child can have speech and language delays or problems learning in school.