Parents may wonder how their child can have a genetic form of inheritance if they can both hear. The reason is that each parent has two genes for hearing. If both parents have a single copy of a recessive gene for deafness, and one normal gene, they will be carriers of deafness. read more
factors also can cause hearing loss. For many babies, the cause of hearing loss is unknown. This booklet answers many of the questions that families have about the causes of hearing loss, including genetic causes. For some of the topics, more extensive details are given in the shaded boxes. read more