Can you hear that too? You can’t? Well, that doesn’t mean I’m having auditory hallucinations. It could just be tinnitus, which describes the irritating sound of ringing, buzzing, clicking, or hissing that affect 10-20% of the world's population. But is this a ringing in the ears, or a ringing in the brain? ** IF YOU’RE TAKING YOUR NEUROLOGY BOARDS THIS SUMMER, CHECK OUT THE PENN NEUROLOGY BOARD REVIEW COURSE AT https://upenn.cloud-cme.com/default.aspx?P=5&EID=65373. AND FOR A DISCOUNTED RATE ON THE ONLINE OR STREAMING RESOURCES, USE PROMO CODE ‘WAVES2020’. ** Produced by James E. Siegler. Music courtesy of Andrew Sacco, Jon Watts, Kai Engel, Lovira, Patches, and Kevin McLeod. Unless otherwise mentioned in the podcast, no competing financial interests exist in the content of this episode. Sound effects by Mike Koenig and Daniel Simion. BrainWaves' podcasts and online content are intended for medical education only and should not be used for clinical decision making. Be sure to follow us on Twitter @brainwavesaudio for the latest updates to the podcast. REFERENCES Arenberg IK, Countryman LF, Bernstein LH and Shambaugh GE, Jr. Van Gogh had Meniere's disease and not epilepsy. JAMA : the journal of the American Medical Association. 1990;264:491-3. Sullivan M, Katon W, Russo J, Dobie R and Sakai C. A randomized trial of nortriptyline for severe chronic tinnitus. Effects on depression, disability, and tinnitus symptoms. Archives of internal medicine. 1993;153:2251-9. Dobie RA. A review of randomized clinical trials in tinnitus. Laryngoscope. 1999;109:1202-11. Lockwood AH, Salvi RJ, Burkard RF, Galantowicz PJ, Coad ML and Wack DS. Neuroanatomy of tinnitus. Scand Audiol Suppl. 1999;51:47-52. Palomar Garcia V, Abdulghani Martinez F, Bodet Agusti E, Andreu Mencia L and Palomar Asenjo V. Drug-induced otoxicity: current status. Acta Otolaryngol. 2001;121:569-72. Crummer RW and Hassan GA. Diagnostic approach to tinnitus. Am Fam Physician. 2004;69:120-6. Lockwood AH. Tinnitus. Neurol Clin. 2005;23:893-900, viii. Mattox DE and Hudgins P. Algorithm for evaluation of pulsatile tinnitus. Acta Otolaryngol. 2008;128:427-31. Han BI, Lee HW, Kim TY, Lim JS and Shin KS. Tinnitus: characteristics, causes, mechanisms, and treatments. J Clin Neurol. 2009;5:11-9. Langguth B, Kreuzer PM, Kleinjung T and De Ridder D. Tinnitus: causes and clinical management. The Lancet Neurology. 2013;12:920-930.