Tinnitus is a condition characterized by hearing sounds—such as ringing, buzzing, or hissing—without any external source. It affects approximately 1 in 5 people worldwide and varies significantly in cause and severity.

Subjective Tinnitus
The most common form, where only the patient can hear the sound. It is typically caused by issues with the auditory nerves or problems in the outer, middle, or inner ear.

Objective Tinnitus
A rare type where the sound can also be detected by a medical professional during examination. It is often caused by muscle contractions or vascular issues.