<unk>  is the symptoms a person may experience after hearing an unexpected, loud sound. The loud sound, called an<unk>  incident, can be caused by feedback oscillation, fax tones, or signalling tones. Telemarketers and call centre employees are thought to be most at risk.
Acoustic shock
Microshock
Shell shock
Surgical shock
Saddle anesthesia
Rewarming shock
Spinal shock
Cardioplegia