@Lilah When searching for somatic tinnitus symptoms there are three things to do. First try to find a movement that changes level of tinnitus. Second is find areas that hurt such as eyes, neck, mouth/jaw and even the gut. Third is to consider the cranial nerves and major veins and arteries that pump blood.
Vagus: carries impulses from the throat, esophagus, thorax, and abdomen (gut) to the brain. Motor fibers supply the heart and many smooth muscles and glands.
For somatic physical tinnitus, a cranial nerve, major vein or artery needs to be considered as having association to some input and sometimes the association is from another body area. One cranial nerve - the vagus carries impulses from the throat, esophagus, thorax and abdomen to the brain. So the gut as one listing has many possible concerns, but the vagus nerve is almost always the Wizard of Oz sitting behind a curtain - unseen. This is the same for the all cranial nerves and major arteries and veins as to who are there supporting team members. A supporting member may be the gut, thyroid, heart or something else.
With Lupus and somatic tinnitus association - Cranial XI. Accessory: carries impulses to the muscles of the throat, muscles to the back and neck (controls muscles used in head movement). These muscles can tighten up and offset the axis area C1 and C2. Treatment may be controlling forward head posture, physical therapy and in some cases, limited use of a neck collar.
Any jerking or hyperextension of neck could cause intercranial hypertension with blood flow input from a major artery and XI is also on the playing field.
https://www.hydroassoc.org/what-are-the-cranial-nerves/