NEUROPHYSIOLOGICAL CAUSES MECHANISM AND MODELS Hearing loss can also produce tinnitus. The most common causes are noise exposure, aging, head injury, and medication. Sometimes the causes are unknown. The prevalence of tinnitus increase with Age and hearing loss, but in particular is influenced by noisy situations report that the onset of tinnitus is gradual. Initially tinnitus is heard only occasionally during the day or for brief periods after work. The onset of tinnitus occurs after the onset of hearing loss.