This document discusses disorders of the outer, middle, and inner ear that can cause conductive, sensorineural, and mixed hearing loss. It describes the pathologies that can occur in the outer, middle, and inner ear including wax buildup, infections, fractures, and more. Common tests used to diagnose the type of hearing loss like audiograms and tympanograms are explained. Finally, it outlines treatment options for different types of hearing loss including medical, surgical, hearing aids, and cochlear implants.