Tinnitus is the perception of noise or ringing in the ears. Tinnitus isn’t a condition itself – it’s a symptom of an underlying condition, such as age-related earing loss, ear injury, or a circulatory system disorder. There are two kinds of tinnitus:
i. Subjective Tinnitus
is tinnitus only you can hear. This is the most common type of tinnitus. It can be caused by ear problems in your outer, middle, or inner ear. It also can be caused by problems with the hearing (auditory) nerves or the part of your brain that interprets nerve signals as sound (auditory pathways).
ii. Objective Tinnitus
is tinnitus your doctor can hear when he or she does an examination. This rare type of tinnitus may be caused by a blood vessel problem, a middle ear bone condition, or muscle contractions.
Tinnitus, Mayo Clinic (Mar. 3, 2018), https://www.mayoclinic.org/diseases-conditions/tinnitus/symptoms-causes/syc-20350156