Hazardous noise causes injury to the hearing mechanisms in the inner ear.<unk>  may result in sensorineural HL (SNHL) that is either temporary (temporary threshold shift, TTS) or permanent (permanent threshold shift, PTS). A TTS will resolve with time, while the time frame for hearing recovery is unique in every case, any SNHL that persists beyond eight weeks after injury is most likely permanent and should be considered PTS. * Hearing loss * Tinnitus (ringing in the ear) * Aural fullness (ear fullness) * Recruitment (ear pain with loud noise) * Difficulty localizing sounds * Difficult in hearing a noisy background * Vertigo
Acoustic trauma
Facial trauma
Barotrauma
Penetrating trauma
Traumatic asphyxia
Closed-head injury
Trauma
Blast injury