Prelingual deafness
Deafness before language is learned / From Wikipedia, the free encyclopedia
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Prelingual deafness refers to deafness that occurs before learning speech or language.[1] Speech and language typically begin to develop very early with infants saying their first words by age one.[2] Therefore, prelingual deafness is considered to occur before the age of one, where a baby is either born deaf (known as congenital deafness) or loses hearing before the age of one. This hearing loss may occur for a variety of reasons and impacts cognitive, social, and language development.