Hearing loss refers to a partial or total inability to hear sounds. It can affect one or both ears and can vary in severity from mild to profound. Hearing loss can arise from a variety of causes, including: 1. **Age-related hearing loss (presbycusis)**: A natural part of aging that typically affects both ears and involves progressive loss of hearing, particularly in the high-frequency range.
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Reduced ability to detect or interpret sound. Conductive impairment affects transmission through the outer or middle ear, while sensorineural hearing loss involves the inner ear or auditory neural pathway; mixed forms combine mechanisms.