Degree of hearing loss refers to how severe a person’s hearing problem is, measured in decibels (dB). It ranges from mild to profound, depending on the softest sound a person can hear. Understanding your hearing level helps in choosing the right treatment, such as hearing aids or other solutions.
Degree of Hearing Loss: Complete Guide (dB Levels, Types & Meaning)
Introduction
Hearing loss is not the same for everyone. It is classified into different degrees (levels) based on how loud a sound must be before a person can hear it. This measurement is done in decibels hearing level (dB HL) during a hearing test.
Understanding the degree of hearing loss helps audiologists diagnose the condition and recommend the right treatment.
What is Degree of Hearing Loss?
The degree of hearing loss refers to the severity of hearing impairment, determined by the softest sound a person can hear.
It is measured through a pure-tone audiometry test, where sounds of different frequencies and intensities are played.
| Degree | Hearing Range (dB HL) |
|---|---|
| Normal | -10 to 15 dB |
| Slight | 16 – 25 dB |
| Mild | 26 – 40 dB |
| Moderate | 41 – 55 dB |
| Moderately Severe | 56 – 70 dB |
| Severe | 71 – 90 dB |
| Profound | 91+ dB |
Explanation of Each Degree
Mild Hearing Loss (26–40 dB)
People with mild hearing loss may:
- Struggle to hear soft speech
- Find it difficult to understand conversations in noisy environments
Even though hearing feels “almost normal,” communication effort increases over time.
Moderate Hearing Loss (41–55 dB)
At this level:
- Normal conversations become difficult
- People may frequently ask others to repeat
- TV volume is often increased
Hearing aids are commonly recommended at this stage.
Moderately Severe Hearing Loss (56–70 dB)
- Speech becomes hard to hear without amplification
- Conversations rely heavily on visual cues
Without hearing devices, understanding speech becomes challenging.
Severe Hearing Loss (71–90 dB)
- Most speech is inaudible without hearing aids
- Only loud sounds may be heard
People at this stage require powerful hearing devices.
Profound Hearing Loss (91+ dB)
- Very loud sounds (like traffic or alarms) may not be heard
- Communication often depends on sign language or advanced devices
This is the highest degree of hearing loss.
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Important Note: Degree vs Real-Life Hearing
The degree of hearing loss only measures loudness, not clarity.
Two people with the same degree may:
- Hear differently in noise
- Understand speech differently
- Experience different challenges
That’s why audiologists also evaluate speech understanding and frequency loss.
How Hearing Loss is Diagnosed
Audiologists determine the degree using:
- Pure-tone audiometry
- Speech testing
- Audiogram analysis
The results are plotted on an audiogram, which shows hearing ability across frequencies.
Why Understanding Degree of Hearing Loss Matters
Knowing the degree helps:
✔ Select the right hearing aid
✔ Plan treatment
✔ Track progression over time
✔ Improve communication strategies
Conclusion
The degree of hearing loss ranges from mild to profound, based on decibel levels measured during a hearing test.
Understanding your hearing level is the first step toward better hearing care and improved quality of life.