Exposure to loud noise is often the cause of tinnitus, a ringing sound in your ears. It could also be a symptom of an ear infection, a buildup of earwax, or high blood pressure. In some cases, tinnitus is an early symptom of hearing loss. Or it may be a side effect of medication, such as nonsteroidal anti-inflammatory drugs and certain antidepressants. For some, using a hearing aid can ease tinnitus.