What is Hyperacusis?
Hyperacusis is a condition that causes a person to be unable to tolerate everyday noise levels without pain. This condition may be initiated by a disease, by an acoustic trauma event (loud noise exposure), or induced by certain drugs.
Historically it has been referred to as "hypersensitivity of hearing" while some have used the term "decreased sound tolerance" (Jastreboff & Hazell, 2004). One definition given to hyperacusis is "the collapse of loudness tolerance" (J.A. Vernon, 2002). In the book Hyperacusis: Mechanisms, Diagnosis, and Therapies Dr. Baguley and Professor Andersson use "hyperacusis to describe the experience of inordinate loudness for sound that most people tolerate well, associated with a component of distress."












