Patient: My daughter was diagnosed with deafness in the low frequency area of the right ear yesterday. I would like to know if it causes deafness and what the cause is. Doctor: The cause of deafness and the duration of deafness are important reasons for the effectiveness of treatment. Generally speaking, if the duration of sensorineural deafness exceeds one month, the effect of medication is not very effective, but it is necessary to check the hearing regularly to exclude slow progressive hearing loss.