Have you ever experienced a constant ringing in your ears that you can't pinpoint the cause? It might be tinnitus (‘tin-nĭ-tus) — the sensation of hearing a sound when no external sound is present. In most cases, tinnitus can be managed, but for some, it’s a chronic condition that can affect sleep and everyday function. Fortunately, there are options to reduce its effects. https://mayocl.in/2I3MZVE | Mayo Clinic