Hesperian Health Guides
Hearing loss that is passed down in families
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HealthWiki > Helping Children Who Are Deaf > Chapter 15: Why children lose their hearing and what we can do > Hearing loss that is passed down in families
Lihua. I wonder how much deafness there has been in our family...
Some children's ears do not develop fully. This genetic problem is passed down in families — inherited from other family members and from earlier generations — although no one else in the family may show signs of deafness.
Hearing loss because of intermarriage
Some kinds of hearing loss can happen because of intermarriage between blood relatives, such as first cousins. In many village communities, intermarriage is common. Parents who are related to each other very closely can have children with hearing problems. If you, your children, or your family members have problems hearing, other children born later may also have hearing problems.
Sometimes a child who has an inherited hearing loss may also have other problems, such as problems seeing; different-colored eyes or white streaks in the hair; goiter or heart trouble; or abnormally-shaped bones of the head, hands, feet, arms, legs, or neck. But sometimes the only inherited problem is the hearing loss. Deafness may be partial or full, and may be from the time of birth, or may develop later.
Avoid marriage between blood relatives such as cousins. Genetic counselors (people who know about the risk of certain diseases being passed from parents to their children) are available in some cities. Try to talk to a health worker if you are concerned about hearing loss in your family.