Suggest Treatment For A Hearing Impairment

SIR MY MOTHER HAS VERY LESS HEARING POWER...THIS STARTED ABOUT 5 YEARS BACK THAT SHE STARTED TO HEAR LESSER THAN NORMAL.WE CONSULTED A DOCTOR AT THE kgmc ABOUT 4 YEARS BACK N THERE WE DISCOVERED THAT HER NERVES OF THE EAR HAVE WEAKENED DUE TO EXCESSIVE DANDRUFF SETELLING INSIDE THE EAR CANAL AND SO NY HEARING AID ONT BE HELPFUL...CAN U PLEASE SUGGEST SOME WAY OUT FROM THIS PROBLEM AS HER HEARING POWER IS DETERIORATING SINCE THEN...WHAT SHOULD I DO??