An audiogram is a graph that indicates the softest sound you can hear for a particular range – otherwise known as your hearing threshold. It reveals the type of hearing loss you are suffering from, as well as the severity (mild, moderate, severe or profound).
There are three types of hearing loss. They are:
- Conductive – disorder of the outer or middle ear. These may be temporary and can be eliminated with treatment.
- Sensorineural – disorder of the inner ear or neural pathway. These are permanent and often related to age or noise.
- Mixed – a combination of conductive and sensorineural.
As a guide, ‘X’ denotes the left ear, ‘O’ denotes right ear and/or denotes the results of bone conduction testing. Bone conduction is used to identify the type of hearing loss you are suffering from. It bypasses the middle and outer ear so a conductive loss can be identified where bone results are better than air conduction results.
Some factors may indicate that you need to be referred to a GP or ENT, including:
- Asymmetrical hearing loss
- Unilateral tinnitus
- Vertigo
- Conductive hearing loss