Last updateWed, 01 Oct 2014 1pm

A 22-year-old beauty queen has been arrested after going "berserk" - CNN (video)

A 22-year-old Kentucky beauty queen has been arrested, accused of stabbing a gas station attendant and biting a woman.

- In the video substance abuse, alcohol is said to be the cause.

Substance abuse can lead to violence but another possible hidden cause in some cases for people going "berserk" or becoming enraged is psychological harassment or criminal psychological harassment.

Beauty queen arrested