Why Do I Hear Cicadas in My Head? What to Know

That persistent cicada-like buzzing or ringing in your head, even when no insects are anywhere nearby, is almost certainly tinnitus. Tinnitus is a phantom sound generated not by anything in your environment but by your own nervous system, and the high-pitched, steady drone that many people compare to cicadas or crickets is one of its most common forms. The experience is remarkably widespread, but the reasons behind it, and the range of things you can do about it, are more varied than most people realize.

Why People Describe It as Cicadas or Crickets

Researchers have found that people rarely describe tinnitus in technical terms like “a tone at 6,000 hertz.” Instead, they reach for comparisons to real-world sounds. Descriptions like “cicadas,” “crickets,” and “screaming” come up repeatedly in clinical interviews, because tinnitus behaves more like a sound object with texture and spatial presence than a simple test tone.¹ The cicada comparison is especially common when the perceived pitch is high and the sound is continuous, which tracks with the fact that most tinnitus corresponds to the frequency range where hearing has been lost or damaged. Because high-frequency hearing loss is the most common type, a high-pitched, insect-like drone is the version of tinnitus more people end up living with.

What Is Happening in Your Brain

Tinnitus is not your ears ringing in the way a bell rings after being struck. It is your brain filling in a gap. When the inner ear stops delivering signals at certain frequencies, the corresponding neurons in the auditory cortex do not simply go quiet. Instead, they become hyperactive, firing spontaneously and synchronizing with their neighbors in ways they did not before. This cortical remapping appears to be the foundation of a chronic tinnitus percept.² Think of it as the brain turning up the volume on a channel that stopped receiving a signal, and in doing so, creating noise where there should be silence.

Animal research supports this picture. In rats with noise-induced tinnitus, the degree to which the auditory cortex’s frequency map became disorganized correlated with the severity of tinnitus-like behavior. Animals whose cortical maps were more scrambled showed worse tinnitus symptoms, while the same disorganization did not predict sensitivity to loud sounds.³ This distinction matters because it tells us tinnitus is not just about having “sensitive ears.” It is a specific reorganization pattern in the brain.

The Most Common Triggers

Noise exposure is the single biggest driver of tinnitus, and the damage often runs deeper than a standard hearing test reveals. Research on both animals and human autopsy tissue has shown that the synapses connecting inner hair cells to auditory nerve fibers are the first structures to degenerate after noise damage. This cochlear synaptopathy leaves hair cells physically intact but permanently disconnected from the nerve fibers they are supposed to feed, creating a form of “hidden hearing loss” that a conventional audiogram may miss entirely.⁴ You can pass a hearing test and still have the kind of damage that triggers tinnitus.

Even in young patients with normal results on a standard audiogram, tinnitus has been linked to hearing loss at very high frequencies that clinics do not routinely test. One study of young adults found that about 72% of those with tinnitus had extended high-frequency hearing loss, compared to roughly 43% of controls without tinnitus. The tinnitus group also showed higher average thresholds and a lower “edge frequency,” meaning the damage crept into lower pitch ranges.⁵ If you are young and have been told your hearing is fine, these findings suggest the standard test may not be looking where your damage actually is.

Medications are another underappreciated cause. Certain antibiotics, chemotherapy drugs, high-dose aspirin, some diuretics, and anti-inflammatory drugs can damage the inner ear. Because ENT symptoms caused by medications are often reversible once the drug is changed, awareness of this possibility matters.⁶ If your tinnitus started or worsened shortly after beginning a new medication, bring it up with your prescriber.

Sometimes the cause is more mechanical. Eustachian tube dysfunction, where the tube connecting the middle ear to the back of the throat fails to open and close properly, can produce tinnitus alongside a clogged or underwater sensation. Patients with this condition often describe ringing, crackling, and muffled hearing, and some find themselves constantly trying to pop their ears.⁷ Unlike the kind of tinnitus driven by nerve damage and brain remapping, this type can sometimes resolve once the underlying pressure problem is addressed.

Jaw Clenching, Neck Tension, and Other Body Connections

One of the more surprising aspects of tinnitus is that it is not always strictly an auditory phenomenon. Many people can change the loudness or pitch of their tinnitus by clenching their jaw, turning their head, or pressing on certain points around the face and neck. Research confirms this: movements of the eyes, head, neck, jaw, and shoulders can modulate tinnitus in a substantial number of patients. For most, the change is modest, but some people report their tinnitus doubling or tripling in loudness during certain maneuvers.⁸

This phenomenon, sometimes called somatic tinnitus, points to the involvement of nerve pathways beyond the auditory system. If you notice your tinnitus worsens when you grind your teeth or when your neck is stiff, that connection is real. It also means that for some people, treating a jaw disorder or chronic neck tension can reduce the tinnitus itself, not just the associated discomfort.

How Stress and Poor Sleep Feed the Cycle

Anyone who has lain awake at night listening to that internal buzzing already suspects a link between stress and tinnitus. Brain imaging backs this up. The emotional distress caused by tinnitus correlates with stronger-than-normal signaling from the amygdala, the brain’s threat-detection center, to the auditory cortex. The more distressing the tinnitus, the stronger this connection appears to be.⁹ In other words, the emotional brain is literally amplifying the phantom sound. Stress does not just make you more aware of the tinnitus; it changes the neural circuitry that sustains it.

Sleep adds another layer. A large study found that people who slept less than eight hours a night, had trouble falling or staying asleep, or had symptoms of obstructive sleep apnea were all significantly more likely to report bothersome tinnitus. Trouble sleeping carried the strongest association, with about 78% higher odds of bothersome tinnitus compared to people without sleep difficulties. These associations held even after accounting for actual measured hearing levels, suggesting that poor sleep contributes to tinnitus distress through a separate pathway from hearing loss itself.¹⁰

When to Take It Seriously

Most tinnitus is the subjective, steady-tone kind described throughout this article. It can be extremely annoying but is rarely a sign of something dangerous. There are, however, a few patterns that warrant prompt medical attention.

Pulsatile tinnitus, a rhythmic whooshing or thumping that matches your heartbeat, is a different entity altogether. It can result from vascular abnormalities, increased pressure inside the skull, or structural problems in the bones of the ear.¹¹ Because some of these causes are treatable and a few are serious, pulsatile tinnitus should always be evaluated by a clinician.

Tinnitus that appears only in one ear, or that comes with sudden hearing loss or unsteadiness, also raises a red flag. These are the typical early symptoms of an acoustic neuroma, a benign but potentially problematic growth on the nerve connecting the inner ear to the brain. The combination of one-sided tinnitus and asymmetric hearing loss calls for further workup, usually including imaging.¹²

What Actually Helps

There is no pill that switches tinnitus off. Management instead focuses on reducing how much the sound bothers you and, in some cases, on reducing the perceived loudness. Several approaches have good evidence behind them.

Sound therapy uses external sound, either from dedicated devices or smartphone apps, to reduce the contrast between tinnitus and silence. Over time, the brain can learn to pay less attention to the internal signal. One study of tinnitus habituation therapy found statistically significant reductions in self-reported loudness, discomfort, and quality-of-life impact, though the treatment did not change performance on auditory processing tests.¹³ The takeaway is that the brain learns to ignore the sound more effectively, even though the underlying auditory wiring does not fundamentally change.

When tinnitus coexists with hearing loss, hearing aids can pull double duty. By amplifying real-world sounds, they reduce the brain’s need to “fill in the gap” that contributes to tinnitus. After six months of hearing aid use, patients in one trial showed significant reductions on both tinnitus severity and hearing handicap scales.¹⁴ Many modern hearing aids also include built-in tinnitus masking features.

Cognitive behavioral therapy takes a different angle. Rather than targeting the sound itself, CBT works on your reaction to it. A therapist helps you identify and challenge the negative thought patterns that tinnitus tends to generate, things like “I will never be able to concentrate again” or “this sound means something is seriously wrong.” The goal is not to eliminate the perception but to reduce the distress it causes, so you can function well despite it.¹⁵ CBT is currently the best-supported psychological intervention for tinnitus.

A newer approach called bimodal neuromodulation pairs sound stimulation with mild electrical stimulation of the tongue or skin. In a large randomized trial, both treatment arms showed significant reductions in tinnitus symptoms over twelve weeks, with effect sizes ranging from moderate to large. Those improvements held up at a twelve-month follow-up, and the treatment had a high compliance rate with no serious side effects.¹⁶ Devices based on this technology have reached the market in some countries, though availability and insurance coverage vary.

Supplements and Unproven Remedies

Ginkgo biloba is probably the most commonly marketed supplement for tinnitus, followed by zinc, magnesium, vitamin B12, and melatonin. The evidence behind all of them is thin. A Cochrane review of ginkgo for tinnitus found no convincing benefit, and the same general picture holds for the other supplements frequently promoted online. That does not mean no one feels better after taking them; placebo effects are strong in a condition as subjective as tinnitus. But the clinical data does not support any supplement as a reliable treatment.

Diabetes, Cardiovascular Health, and Other Systemic Links

Tinnitus is sometimes a canary in the coal mine for broader health issues. In people with diabetes, for example, tinnitus appears at a meaningful rate and tends to worsen with both age and the duration of the disease. A study of 250 patients with diabetes found that about a quarter of them had tinnitus, and the severity was significantly worse among those who had been diabetic for more than ten years. The authors suggested tinnitus may serve as an early indicator of neuropathy or microvascular damage to the inner ear.¹⁷

The connection makes physiological sense. The cochlea depends on a rich blood supply delivered through tiny vessels, and conditions that damage small blood vessels, whether diabetes, high blood pressure, or high cholesterol, can compromise the oxygen and nutrient delivery that keeps the inner ear functioning. If you have tinnitus and also have risk factors for cardiovascular or metabolic disease, the two may not be independent problems.

The Search for an Objective Tinnitus Test

One of the most frustrating aspects of tinnitus, for patients and clinicians alike, is that there is no scan or blood test that can confirm it exists or measure how bad it is. Diagnosis rests entirely on a patient’s self-report, which makes it difficult to track treatment outcomes or to validate disability claims. Researchers are working to change that.

One promising approach uses functional near-infrared spectroscopy, a neuroimaging technique that measures blood-flow changes in the brain through sensors placed on the scalp. When machine learning algorithms were applied to the brain-activity patterns captured this way, researchers were able to distinguish tinnitus patients from controls with about 78% accuracy. Differentiating mild from moderate-to-severe tinnitus was even more successful, reaching about 87% accuracy.¹⁸ These numbers are not yet high enough for clinical diagnosis, but they represent a real step toward tools that could eventually verify and grade tinnitus objectively.

Other research has explored functional brain imaging more broadly to map the neural networks involved in tinnitus, with the long-term goal of identifying biomarkers that could guide treatment selection.¹⁹ And in animal studies, changes in the auditory brainstem response, a routine hearing test already used in clinics, have shown potential as an indicator of tinnitus presence.²⁰ None of these tools are ready for your next ENT visit, but the direction of the science is clear: tinnitus will not remain purely subjective forever.