Tinnitus is the term for the sensation of hearing a sound in the absence of any external sound. The person may hear an unexplained constant buzzing, ringing, whooshing or humming sound in the ear.
Hyperacusis is an increased sensitivity to normal environmental sounds.
There are two types of hyperacusis: cochlear and vestibular. Cochlear, the most common form, causes pain in the ear, frustration, and a general feeling of intolerance to everyday sounds. Vestibular hyperacusis, on the other hand, causes feelings of nausea, dizziness, and imbalance when particular sounds are present. Both types of hyperacusis can cause anxiety, stress, depression, social isolation, and phonophobia.
A fear of normal sounds.
A recently proposed disorder characterized by extreme sensitivity to noises that are generated by others (e.g. other people’s chewing, smacking lips, or tapping fingers).