Tinnitus, or ringing in the ear is not a disease, but a symptom which can result from a wide range of underlying causes, including: prolonged exposure to abnormally loud sounds in the ear canal, ear infections, foreign objects in the ear, nasal allergies which prevent (or induce) fluid drain, or wax build-up. Tinnitus can also be noticed as part of the natural aging process, as a side effect of some medications or of genetic hearing loss. However, the most common cause is noise-induced hearing loss.