Subjective tinnitus, roughly 95 to 98% of cases, is heard only by you; objective tinnitus is a real sound from a blood vessel or muscle near the ear, and it points the workup toward imaging rather than hearing tests.
Most tinnitus falls under the first heading. But the distinction isn't just terminology — it changes how a case gets diagnosed and what the workup looks like.
The word you may meet instead: somatosounds
Clinicians and research papers increasingly avoid "objective tinnitus" altogether and call these somatosounds — sounds generated by the body itself, as opposed to a perception with no acoustic source.
The renaming is not pedantry. Calling both things "tinnitus" implies they are versions of one condition, when a turbulent blood vessel and a phantom perception have almost nothing in common beyond being heard. Somatosounds have a physical source that can in principle be located and sometimes fixed; subjective tinnitus does not.
If you encounter the term in a letter or a paper, it means the category described below.
The core difference
Subjective tinnitus is a sound only the person experiencing it can perceive — it originates somewhere in the auditory pathway itself, without any physical sound being generated. Objective tinnitus, by contrast, is a real, physical sound generated somewhere in or near the ear — typically by a blood vessel or muscle — that can, at least in principle, also be heard by someone else, such as a clinician listening with a stethoscope placed over the ear canal.
Subjective tinnitus is typically described as constant and non-rhythmic — a steady ring, hiss, or buzz. Objective tinnitus is usually rhythmic: pulsatile and synchronized with the heartbeat, or intermittent in a pattern tied to muscle contractions. If what you're hearing keeps time with your pulse, that's specifically covered in more depth in the article on pulsatile tinnitus — it's the most common form objective tinnitus takes. The muscle-driven kind, a repeating click or buzz set by the spasm rather than the pulse, is described in middle ear myoclonus.
Why prevalence is so lopsided
Objective tinnitus is rare. The large majority of tinnitus — cited at roughly 95 to 98% of cases — is subjective. Point prevalence estimates for non-pulsatile subjective tinnitus run around 10 to 15% of the general adult population, rising to 15 to 25% in older adults. Objective tinnitus, in comparison, accounts for only a small remainder of cases, which is part of why it draws disproportionate clinical attention when it does show up — it's the more unusual presentation.
Why the cause matters for diagnosis
The two types don't just sound different — they arise from fundamentally different mechanisms, and that has direct diagnostic consequences. Subjective tinnitus is caused by some abnormality along the auditory pathway itself, and in the large majority of cases it's idiopathic, meaning no single identifiable cause is ever pinned down, which is also why it's rarely curable outright, and why "manage it" is usually the realistic goal, not "cure it".
Objective tinnitus works differently: it's usually caused by a physical sound being produced near the ear — most often from a vascular structure (a blood vessel with turbulent or unusual flow) or, less commonly, from muscle spasms near the middle ear. Because there's a specific physical source, objective tinnitus more often has an identifiable — and sometimes treatable or even curable — underlying cause, unlike the more diffuse and usually permanent nature of subjective tinnitus.
What a workup for objective tinnitus looks like
Because objective tinnitus points toward a specific physical source rather than a diffuse auditory-pathway issue, the diagnostic workup differs meaningfully from a standard subjective tinnitus evaluation. It typically involves imaging aimed at the vascular structures near the ear — to look for things like an unusual vessel position, a vascular tumor such as a glomus tumour, or turbulent blood flow — rather than the audiometric-focused workup used for subjective tinnitus. This is exactly why correctly categorizing which type you have, early, matters: it determines whether the next step is a hearing evaluation or a vascular imaging referral. Do you need a scan for tinnitus? sets out when imaging is recommended and which kind.
What this means practically
- If your tinnitus is a steady, constant sound with no rhythm, it's almost certainly the common, subjective kind.
- If it beats in time with your pulse, or comes and goes with a rhythm unrelated to your heartbeat, mention that specifically to whoever evaluates you — it changes what they should be looking for, and it's worth reading the dedicated pulsatile tinnitus article before that appointment.
- Objective tinnitus being rare doesn't mean untreatable — quite the opposite; identifying a specific physical cause is often the first step toward resolving it, rather than managing it long-term.