Auditory processing disorder (APD), also known as central auditory processing disorder, is a neurological disorder where the brain has trouble processing auditory information. It affects 5% of school-aged children. Common symptoms include difficulty following conversations, becoming distracted by background noise, and needing instructions repeated. While the exact causes are unknown, potential causes include premature birth, head trauma, ear infections, and lead poisoning. APD is often diagnosed by an audiologist through tests of auditory attention, discrimination, memory, and processing of complex sounds. Supports for children with APD include preferential classroom seating, use of assistive technology, visual aids, quiet testing spaces, and clear, slowed speech at home and school.