Temporary hearing loss is often caused by exposure to loud noises such as attending a concert, gunshots or fireworks, or occupational exposure. Temporary hearing loss is characterized by a Temporary Threshold Shift (TTS) and is often accompanied by tinnitus. It can last for only a few hours or several days before hearing returns to normal. If you are exposed to loud noises frequently, the ears have a harder time recovering from TTS after each occurrence, and your hearing loss can become permanent.
Unlike temporary hearing loss, permanent hearing loss cannot be reversed and usually involves damage to the auditory nerves or the tiny hair cells of the inner ear. For most permanent hearing losses, the best solution is properly fitted hearing aids.