The Exorsism of Anneliese Michel
In 1968, at the age of 16, Anneliese Michel began suffering from convulsions. By 1973, Anneliese had developed such a strong psychosis that she would hallucinate while praying and see demon faces throughout the day. She would also rip her clothes off, eat coal, and lick up her own urine. In addition, she became completely intolerant of religious symbols and could not partake of holy water.
Anneliese was admitted to a psychiatric ward to deal with her mental state, however no medicine seemed to work. Anneliese went under 76 exorcisms before dying of starvation upon refusal to eat.
Video and audio during one of the exorsisms: X