Audiology General Information Clinical Services Scheduling Prevalence of Hearing Loss How the Ear Works Types of Hearing Loss Side Effects of Hearing Loss Guide to Purchasing a Hearing Aid FAQ Related Links   Types of Hearing Loss The common causes for hearing loss are hereditary, trauma, disease, noise exposure and aging. Conductive Hearing Loss-occurs when the transmission of sound is impeded through the outer and/or middle ear. Sensory-neural Hearing Loss-occurs in the inner ear where the problem lies in the cochlea and /or the auditory nerve. Mixed Hearing Loss- occurs in the outer and/or middle ear and inner ear. It is combination of conductive and sensory-neural hearing loss. Any information provided on this Web site should not be considered medical advice or a substitute for a consultation with a physician. If you have a medical problem, contact your local physician for diagnosis and treatment. © 2004-2005 ENT Physicians & Surgeons, P.A.