Loss of hearing can result from extrinsic, intrinsic, and idiopathic factors. Extrinsic causes come about as a result of external factors such as injury or noise damage. Intrinsic factors originate within the body, while idiopathic factors have no apparent. Genetic or hereditary causes, meaning that the gene is passed on from a parent, are among the intrinsic causes of hearing loss. This means that the mutation of genes directly resulted in hearing loss.