Here is a news article about the use of hypnosis instead of anesthesia for surgery

A Canadian man named Kenneth Parks began suffering insomnia in his 20s. On the night of May 23, 1987, he got out of bed, drove 14 miles to his in-laws’ house, killed his mother in law and injured his father-in-law with a tire iron and a knife. After the incident, he drove himself to a police station and turned himself in. Up until this point, he had a good relationship with his in-laws, and his wife vouched for his lack of motive in the crime. He claimed he had been sleepwalking, and the following year, he was found not guilty of murder.