Adv: It has the same advantage as of in the ear hearing aid. It is even less visible and more cosmetically pleasing.
Disadv: Even smaller than the in the ear Hearing aids requires good manual dexterity.
A hearing aid generally must be cared carefully. The user should know how to care and what to do if it fails. He should also have spare parts readily available.
Common medical problems among hearing aid users are otitis externa and pressure ulcers in the external auditory canal or meatus.
Other hearing aid problems includes
1. whistling noise,
2. loose ear mold which are improperly worn or made or worn out,
3. improper aid selection requiring too much power to seperate between microphone and reciever,
4. inadequate amplification,
5. pain from mold.
There are other Hearing aids which are implanted postauricularly under the skin into the skull and an external device is worn above the ear which transmits the sound through the skin.Eg: cochlear implants which are done for patients with little or no hearing. It has to meet all the consequence as of other surgeries including finance.
