Sources and evidence

Every research-backed claim on this site links here. Sources are grouped by strength. Where we rely on a leading hypothesis rather than settled fact, or on animal-model research, we say so on the page itself. Where a claim could not be verified, we left it out.

One honest, load-bearing note: "reactive tinnitus" is a descriptive term used by patients and clinics, not a formal medical diagnosis. It does not appear in authoritative audiology references. The science below is drawn from the formally studied entities behind the experience: tinnitus and hyperacusis.

Primary and authoritative sources

  • ASHA Practice Portal, Tinnitus and Hyperacusis. American Speech-Language-Hearing Association. Hyperacusis categories (loudness, annoyance, fear, pain), central auditory system, and the over-protection warning. asha.org
  • Auerbach BD, Rodrigues PV, Salvi RJ (2014). Central gain control in tinnitus and hyperacusis. Frontiers in Neurology. The central-gain model. PMC4208401
  • Zeng FG (2020). Tinnitus and hyperacusis: central noise, gain and variance. Hearing Research. Central hyperactivity and co-occurrence. PDF
  • Chen GD et al. (2015). Salicylate-induced auditory and limbic hyperactivity. eLife. The auditory-to-amygdala link (animal model; human link correlational). PMC4426664
  • Langguth B et al. (2023). Tinnitus guidelines and their evidence base. Journal of Clinical Medicine. Limited and conflicting evidence; CBT strongest; pharmacology largely negative. PMC10178961
  • Fuller T et al. (2020). Cognitive behavioural therapy for tinnitus. Cochrane Database of Systematic Reviews. CBT reduces tinnitus impact; long-term durability uncertain. Cochrane
  • American Tinnitus Association. Is there a magic pill? No pharmaceutical eliminates tinnitus; no FDA-approved drug. ata.org
  • NHS. Tinnitus: symptoms, causes, and when to get medical help. nhs.uk

Supporting sources

  • Formby C et al. (2003), and replication. Changes in loudness tolerance with sustained ear-protection versus sound-generator use. The over-protection effect, with recovery in about a week.
  • Cleveland Clinic. Pulsatile tinnitus: when heartbeat-rhythm tinnitus needs assessment. clevelandclinic.org
  • Tyler RS, Pienkowski M, et al. (2014). A review of hyperacusis and future directions, source of the four-category framework, as cited by ASHA.
  • StatPearls / contested middle-ear syndromes. Tonic tensor tympani syndrome and middle-ear myoclonus are not well-defined or universally recognised entities. StatPearls

On evidence quality

This is a Your-Money-or-Your-Life health topic, so honesty about certainty matters. The central-gain mechanism is the leading explanation, not proven fact, and its causal role is actively debated. Some mechanism evidence comes from animal models, with human links that are correlational. Co-occurrence percentages between tinnitus and hyperacusis vary widely across studies. We have tried to reflect this uncertainty rather than paper over it. None of this is a substitute for assessment by a doctor or audiologist; see our disclaimer.