Congenital deafness

Congenital deafness refers to deafness that has existed since birth. It can be divided into hereditary and non-hereditary; it is mainly autosomal recessive, accounting for more than 75%, non-hereditary congenital deafness accounts for about 20%, hereditary deafness is divided into non-syndromic and syndrome (syndromic) two categories, accounting for about 80% and 20%, respectively. There is also a type of deafness caused by mitochondrial disease. Non-hereditary deafness can be caused by congenital infection, metabolic factors in pregnant women, and so on.