The availability of auditory rehabilitation has significantly improved with the current legislation. Rehabilitation options have developed with advanced hearing aid technology. With the aging population, the number of persons using a hearing aid is increasing. A physician will need basic abilities to communicate with an elderly for whom the use of a hearing aid may be problematic. Besides a hearing aid, a hearing-impaired person may need other appliances, such as a better audible doorbell or an amplified telephone. In severe cases, alarm systems comprising of a fire alarm and indicator of doorbell and telephone ringing may be necessary.