Noise-induced hearing loss is sensory deafness caused by prolonged exposure to noise affecting the auditory system [1]. The condition is described as multifactorial and complex in pathophysiology, with both genetic and environmental contributors and substantial occupational involvement [2]. One source also frames NIHL as a public-health and occupational health concept rather than a narrowly defined infectious or acute condition [2].
Disease Profile
OtherNoise-induced hearing loss
噪声性听力损失
Noise-induced hearing loss (NIHL) is a form of sensorineural hearing loss associated with long-term exposure of the auditory system to a noisy environment [1]. It is reported as the second most common cause of sensorineural hearing loss after age-related hearing loss and is estimated to affect approximately 5% of the world’s population [2]. The available sources emphasize its substantial physical, mental, social, and economic impact, as well as the importance of prevention and early detection [2][1].
The clinical picture described in the sources centers on hearing loss, with auditory fatigue noted as an early symptom [1]. Hearing may partially recover after removal from a noisy environment, but prolonged exposure can lead to permanent impairment [1]. Tinnitus is also mentioned as a significant associated complaint and a contributor to reduced quality of life [1]. Beyond auditory symptoms, NIHL is associated with broader physical, mental, social, and economic consequences, and stress and social isolation may further worsen quality-of-life decrements [2][1]. Source-backed detail on specific staging, complication rates, or prognostic patterns is not yet available.
NIHL is reported to remain highly prevalent in occupational settings, indicating an important burden in work-related exposure contexts [3]. The literature snippets also note increasing contribution from social noise exposure, including personal music players, alongside the long-recognized occupational pattern [3]. Societal changes are said to have made people more likely to be exposed to noise, and the condition is presented as a cause of substantial economic loss [1][3]. The available sources do not provide a more precise geographic distribution, outbreak pattern, or surveillance count, beyond the estimate that NIHL affects approximately 5% of the world’s population [2].
NIHL is not transmitted person-to-person; rather, it develops through exposure of the auditory system to noise over time [1]. The sources specifically identify prolonged noisy environments and occupational exposure as important mechanisms, with social noise exposure also contributing in contemporary settings [2][1][3]. A case-level histopathology report links profound hearing loss to exposure from explosions and drilling in a gold mine, illustrating the relevance of intense occupational noise exposure [4].
The sources identify people with substantial occupational noise exposure as an important risk group, reflecting the strong work-related burden of NIHL [2][3]. Individuals exposed to social noise, including users of personal music players, are also noted as increasingly affected [3]. More generally, anyone with long-term exposure to a noisy environment is at risk, but source-backed detail on age, sex, or other specific vulnerability strata is not yet available [1].
The source material consistently emphasizes prevention and early detection as the main burden-reduction strategies for NIHL [2][1]. Educational programs and screening programs in routine primary care and specialty clinics are highlighted as useful preventive approaches [2]. Public education about hearing health and broader noise prevention and mitigation strategies are also recommended in the reviewed literature [1][3]. Source-backed detail on specific protective devices, exposure limits, or formal program schedules is not yet available.
For surveillance purposes, NIHL should be interpreted as a chronic, exposure-related hearing disorder whose detection depends on noise history and audiologic assessment rather than acute case finding [2]. The reviewed literature notes screening approaches based on history of noise exposure, audiograms, speech-in-noise testing, and measures such as distortion product otoacoustic emissions and auditory brainstem response [2]. Because quality-of-life decrements may be underrecognized and the burden is substantial in occupational settings, routine case ascertainment may miss affected individuals without targeted screening [2][3].
- 1 Ding T et al. What is noise-induced hearing loss? Br J Hosp Med (Lond). 2019 Sep 2. PMID: 31498679. doi: 10.12968/hmed.2019.80.9.525. PubMed: https://pubmed.ncbi.nlm.nih.gov/31498679/
- 2 Natarajan N et al. Noise-Induced Hearing Loss. J Clin Med. 2023 Mar 17. PMID: 36983347. doi: 10.3390/jcm12062347. PubMed: https://pubmed.ncbi.nlm.nih.gov/36983347/
- 3 Basner M et al. Auditory and non-auditory effects of noise on health. Lancet. 2014 Apr 12. PMID: 24183105. doi: 10.1016/S0140-6736(13)61613-X. PubMed: https://pubmed.ncbi.nlm.nih.gov/24183105/
- 4 Noise-Induced Hearing Loss. Annals of Otology, Rhinology & Laryngology. 1978. doi: 10.1177/000348947808700615. DOI: https://doi.org/10.1177/000348947808700615
- 5 Noise-Induced Hearing Loss. Archives of Environmental Health: An International Journal. 1970. doi: 10.1080/00039896.1970.10665674. DOI: https://doi.org/10.1080/00039896.1970.10665674
- 6 Noise-Induced Hearing Loss. Otoneurology and Vestibular Medicine. 2025. doi: 10.1007/978-3-031-94841-1_25. DOI: https://doi.org/10.1007/978-3-031-94841-1_25
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Figure 1 | Full historical trajectories across all reporting countries.
Figure 2 | Year-over-year monthly comparison for seasonality and structural shifts.
Dataset Archive
Supplementary Data | Multi-country disease dataset
Machine-readable multi-country disease dataset (JSON/CSV) with source metadata.
Source Register
Official sources and update cadences used to construct the downloadable dataset.
Brazil
Brazil Ministry of Health DATASUS/SINAN public DBC microdata aggregated to national monthly notification counts.
Official source