Inverted Hearing Syndrome

Inverted Hearing Syndrome is a psychological condition that makes a subject suffering from it always turn its back to a source of sudden noise. It is only caused by having an encounter with a wild Finum. Due to the predator's nature to cause an acoustic illusion behind the victim's back, survivors of the vicious predator suffer from anxiety and paranoia, and refuse to face a source of sudden noise, rather turning their back to it in order to protect themselves from an attack.

There is no medical procedure or cure for this mental condition, appart from counseling which can make the paranoia go away after a certain time.