Tinnitus is often related to hearing loss, and may or may not be a sign of early hearing loss. It is exacerbated by ototoxic drugs and exposure to noise. Tinnitus is the most common disability experienced by veterans who have been in combat zones. You will find information on tinnitus at: https://www.hearingloss.org/?s=tinnitus The Hearing Health Foundation's most recent magazine focuses on tinnitus. Worth reading at: https://hearinghealthfoundation.org/