What is Profound Hearing Loss?: Understanding this hearing loss, symptoms, causes, and what can help

What is Profound Hearing Loss?

The symptoms, causes, and what can help

Overview    |    The hearing range    |    What is it?    |    The causes    |    How it's assessed    |    Living with it    |    Summary

Last Hearing Aid UK Update:  15/10/2026

Overview

Profound hearing loss means you have very little usable hearing, or none at all. Without support, most everyday sounds, even someone talking right next to you, can be hard or impossible to hear. There’s no single cause: it can be inherited, it can follow an illness or injury, and in some cases age-related hearing loss becomes profound over time. 

The good news is there’s a lot that can help, from powerful hearing aids and cochlear implants to sign language. The sooner hearing loss is picked up, the sooner the right support can be put in place.

In this article, we look at the signs, causes and everyday challenges of profound hearing loss, how it’s assessed, and practical ways to live well with it.

Understanding the hearing range

Audiologists measure hearing loss in decibels (dB) and describe it in four levels. These are the decibel ranges used by the National Deaf Children’s Society.

• Mild (21 to 40 dB): Soft speech is hard to hear, especially in background noise.
• Moderate (41 to 70 dB): Voices need to be louder than usual.
• Severe (71 to 95 dB): Speech needs to be loud, and may still be hard to follow.
• Profound (more than 95 dB): Only very loud sounds can be heard, if any.

These thresholds vary slightly between organisations, so your audiologist may describe your results using slightly different bands.  

What does it mean for you?

Imagine someone calling your name from across the room, or your phone ringing on the table beside you, and not hearing either. For people with profound hearing loss, that’s often everyday life. Some loud sounds may be felt as vibrations rather than heard, and conversations that others take for granted can take real effort.

Signs of profound hearing loss

Profound hearing loss is usually picked up quickly when it’s present from birth, through NHS newborn hearing screening, but when it develops later in life, the signs can build gradually. They can include:

• Not reacting to loud, everyday sounds such as a doorbell, smoke alarm or someone calling your name
• Relying heavily on lipreading, facial expressions or context to follow what people say
• Finding speech hard to understand even when it’s loud or close by
• Being unable to use a standard phone without support
• Finding that hearing aids which used to help no longer give enough benefit

If your hearing changes suddenly in one or both ears, or has been getting worse over a few days or weeks, the NHS advises getting an urgent GP appointment or contacting NHS 111.

Causes of profound hearing loss

Profound hearing loss can be present from birth or develop later in life, and the causes tend to differ.

From birth

• Genetic conditions that affect how the inner ear develops
• Infections during pregnancy, such as rubella or cytomegalovirus (CMV)

Later in life

• Infections such as meningitis
• Ototoxic medicines, which can damage the inner ear
• Severe head injury
• Extremely loud noise, although this more often causes milder hearing loss
• Age-related hearing loss (presbycusis), which occasionally becomes profound over time

How is it assessed?

If you’re worried about your hearing, a GP is a good first port of call, as they can check for causes such as earwax or an infection. A full hearing assessment by an audiologist then shows how much you can hear. They’ll usually start by looking inside your ears, and may also carry out tympanometry, a quick check that your eardrum and middle ear are moving as they should.

Then comes audiometry, the familiar hearing test where you wear headphones and respond each time you hear a sound. With profound hearing loss, you’ll typically only respond to the very loudest sounds, if at all.

If more detail is needed, you may be referred, usually through the NHS, for specialist tests. An Auditory Brainstem Response (ABR) test records how your brainstem reacts to sound. An Otoacoustic Emissions (OAE) test checks whether the inner ear is responding to sound. It doesn’t measure how much you can hear, so it’s used alongside other test results.

Living with profound hearing loss

Living with profound hearing loss brings its challenges, but there are lots of ways to stay connected. Good communication often comes from finding the right mix for you:

• British Sign Language (BSL): For many people, BSL is their main language and a rich, natural way to communicate.
• Lipreading: Watching the shape of someone’s mouth, along with their expressions and gestures, to follow what’s being said.
• Hearing aids: Very powerful hearing aids can give some people useful access to sound.

The NHS notes that hearing aids only help if you still have some hearing left, and that the smallest in-canal styles are not usually powerful enough for severe hearing loss.

• Cochlear implants: Small devices, fitted during surgery, that bypass the damaged part of the inner ear and send signals straight to the hearing nerve.

They can give a sense of sound, including speech, to people who get little benefit from hearing aids. The NHS explains that a specialist assessment is needed first. An implant only works if the hearing nerve is working, which is one reason the assessment matters.

• Text and email: Simple, reliable ways to keep in touch without needing to hear.
• Alerting devices: Flashing or vibrating alerts for doorbells, smoke alarms and alarm clocks, so you don’t miss what matters.
• Support:  RNID also has practical communication tips for people with hearing loss and the people around them.

“With profound hearing loss, the most important thing we can do is be honest about what hearing aids can and can’t do. For some people, a powerful hearing aid gives back enough sound to make conversation, the doorbell and the television easier.

For others, it isn’t enough, and the right step is a referral for a cochlear implant assessment. Either way, getting your hearing properly tested is how you find out which path makes sense for you.”

says Paul Harrison, Audiology Expert & Founder, Hearing Aid UK

Why getting help early matters

If you or someone you love has profound hearing loss, getting the right support early can make a real difference. The NHS advises that the earlier you get hearing aids, the more you’ll get out of them. With the right technology, communication skills and people around you, it’s absolutely possible to stay connected, keep learning, build a career and enjoy life to the full.

Summary

Profound hearing loss is the most severe level of hearing impairment, where even loud sounds may not be heard; however, there’s a lot that can help. It can be caused by genetics, infections, head injuries, ageing, or certain medications. Getting help early matters: the sooner hearing loss is picked up, the more options you have and the sooner the right support can begin.

How Hearing Aid UK can help

If you’re noticing changes in your hearing, or you’re worried about someone close to you, a free hearing test is a simple place to start. Hearing Aid UK connects you with over 200 independent, HCPC-registered audiologists across 93+ clinics, and you can have your test at a local hearing clinic or through a free home visit.

If powerful hearing aids could help, your audiologist will talk you through the options honestly, with no pressure to buy. If they think you’d benefit from specialist NHS care, such as a cochlear implant assessment, they’ll tell you that too. Every hearing aid comes with aftercare for life and a 60-day money-back guarantee, and we’re Which? recommended.

Call us free on 0800 567 7621 to book your free hearing test.