Tinnitus heard in the left ear may be related to stapedial myoclonus, jugular vein bulboma, internal carotid artery dysplasia, etc.
1. Stapedial myoclonus: this kind of pulsatile tinnitus is often paroxysmal, can be due to acoustic stimulation or blinking, auricular skin stimulation when the attack, can also be spontaneous. Tinnitus episodes are synchronized with myoclonic episodes, and the rhythm is consistent.
2. Jugular vein globe tumor: this disease originates from the paraganglionic cells of the chemoreceptors of the jugular vein globe, also known as jugular foramen paraganglionic tumor. The pulsatile tinnitus on the affected side is the most common clinical symptom. Ear examination sometimes reveals a pulsatile dark red mass through the tympanic membrane.
3. Dysplasia of internal carotid artery: If the internal carotid artery is dysplasia in embryonic period, the intersection of vertical and horizontal segments near the base of the skull is displaced, and the blood vessel is narrowed, which may cause blood flow disorder in the place, or the blood flow of pharyngeal ascending artery is increased, and cause pulsatile tinnitus.
When a popping sound is heard in the left ear, systematic examination can be actively sought to clarify the diagnosis and etiology.