The reason I believe neck/posture could be very involved even if noise-triggered are that a few cases can be traced on forum where neck was a clear contributor in the past. I'd be very thankful if
@Greg Sacramento in particular weighed on this, having such extraordinary knowledge on the issue.
I read all your posts and you have much (most) of my problems where one problem leads to another, including with your above post.
One problem is probably from off balanced posture causing unbalanced muscles from neck muscle strain. Cranial nerves (several) seem to be at play.
Somatic posture muscle spasms that led to pulsatile blood pressure hypertension - same as me. All discussion within your above post is accurate.
The best treatment may be time, good posture and focus on good thoughts. Don't get dehydrated, maybe try liquid Vitamin C and Magnesium in small amounts 2 or 3 times a day.
My best guess is that your trapezius muscles on lower body height side and middle/upper back reacts to posture change by way of blood pressure hypertension when stressed. This would place concern to any anatomy above that. Lots of studies of then how cranial nerves (any or all) become involved. Proper neck and shoulder balance is needed.
A padded shoe might help on lower height side and a neck brace for one hour a day.
Very brief personal summary:
Tinnitus from noise (syringing) came first for me.
Then somatic factors neck/jaw from muscle contractions without proper head support caused high pitched tinnitus. My C spine straighten from this, but I did have C spine disc problems before this happening.
Finally, hypertension caused vision problems and pulsatile tinnitus.
Brief discussion: Read last sentence, but you probably don't have severe hearing loss from the MRI. Somatic factors since MRI, may act as triggers or modulators. So let's continue to focus on treatments for you.
Robert Aaron Levine, in Office Practice of Neurology (Second Edition), 2003:
Somatic (Head or Upper Cervical).
Observations abound supporting the notion that head and neck somatic events can be associated with tinnitus. About 20% of tinnitus clinic patients report that they can modulate their tinnitus somatically, such as by clenching the teeth or pushing on the head. Systematic studies find that more than 75% of people with tinnitus can modulate their tinnitus in a variety of ways. Most commonly it intensifies, but sometimes the tinnitus can become quieter, particularly if it is unilateral. Less often patients describe changes in its pitch or location. Occasionally changes can persist a minute or two after the manipulation is over.
Tinnitus generally is included among the features associated with pain in the temporal or preauricular region that goes by various names such as Costen's syndrome, craniomandibular disorder, and temporomandibular joint (TMJ) syndrome. Well-designed studies have shown a higher incidence of tinnitus in normal-hearing subjects with TMJ syndrome than in controls. The same is true regarding whiplash. From multiple other observations and case reports, the concept of tinnitus associated with whiplash and TMJ syndrome can be generalized to include tinnitus associated with any disorder of the upper cervical region and head, including dental pain.
The tinnitus temporally associated with unilateral somatic disorders is localized to the ipsilateral ear. Therefore, unilateral tinnitus with no associated auditory or vestibular symptoms such as hearing loss must be suspected for an ipsilateral head or neck somatic disorder. The physical examination should include inspection of the teeth for evidence of bruxism, such as excessive wear of the bottom incisors; palpation of the head and neck musculature for tender muscles under increased tension; and forceful systematic isometric contraction of muscle groups of the head, neck, and jaw for their effects on the patient's tinnitus.
Somatic modulation is one of at least three factors that have been associated with changes in tinnitus attributes. First, as described earlier, most if not all patients can somatically modulate their tinnitus. Stress is a second such factor. Patients consistently describe that they are more bothered by their tinnitus when under stress. Whether this is because the volume of tinnitus changes or because the patient focuses his or her attention on the tinnitus often cannot be distinguished by the patient. In fact, it could be that stress acts through somatic modulation to increase tinnitus loudness because contractions of craniocervical musculature such as clenching the teeth, furrowing the brow, or grimacing often accompany stress. Therefore, one way by which stress may lead to increased tinnitus loudness is through increasing head and neck muscle tension, which in turn lead to louder tinnitus by the somatic mechanism. Third, some subjects clearly associate an increase in their tinnitus loudness with exposure to loud sound, and in some the louder tinnitus can persist for hours after the exposure has ended. Therefore, if a patient reports that his or her tinnitus is intermittent or has wide fluctuations in loudness or other qualities, and there is neither exposure to intense sound nor evidence for stress, then somatic modulation must be suspected.
A history of variations in tinnitus loudness then raises suspicion for a somatic factor modulating the percept's loudness (Table 9-3). At one extreme are patients who describe that they have periods when their tinnitus cannot be heard, even in the quiet. Others report wide variations in the loudness of their tinnitus. For still others, their tinnitus is unilateral when it is quiet but becomes nonlateralized when the tinnitus is louder. Such phenomena suggest that there are ongoing somatically mediated factors modulating the tinnitus percept.
Diurnal fluctuations in the tinnitus percept also suggest that somatic modulation is operative. Patients who describe their tinnitus as louder upon awakening raise the possibility that somatic factors (such as bruxism or neck positioning) are active during sleep and are causing an increase in tinnitus loudness. Others describe that their tinnitus usually has vanished by the time they awaken and then returns a few hours into the day; this scenario suggests that during the day they are reactivating their tinnitus through somatic mechanisms, such as the tonic muscle contractions needed to support the head in an upright position or clenching related to the stress of daily activities. Finally, others describe that their tinnitus is louder after awakening from a nap in a chair; this may relate to somatic factors such as stretching of the neck muscles when their head passively falls forward while dozing in a sitting position.
In general, although a somatic factor on its own can cause tinnitus, much more often somatic factors combine with other factors (such as chronic hearing loss) to act as trigger factors or modulators.