Hearing loss in the family
The presence of hearing loss in more than one family member can be caused by the presence of a defective gene in the genetic structure of that family member. In such a situation, first, detailed examinations and history taking by a specialist doctor and then referring the patient to a genetics laboratory can be effective in diagnosing this type of hearing loss.
Delay in language and speech development
Many studies and researches have been conducted on the relationship between hearing and language and speech development, and all of them emphasize that any lesion in the auditory system (conductive or sensorineural hearing loss) can seriously affect the development of speech and language. One of the elders of auditory rehabilitation science says: We talk with our ears.
Therefore, it should be noted that examining speech development in the early years of life can identify the presence of hearing loss in children. An infant who does not make sounds (Babbling) should pay the attention of the parents to the fact that this child probably has a hearing loss.
Of course, it should be noted that examining speech organs and nerve pathways and the central nervous system and ensuring their health can be very useful in reaching a correct diagnosis.