- After his surgery, Dahmer became distant and cold. He also lacked self confidence.

- His brother was also born at this time. According to this brother, Dahmer never smiled once.

- His family moved to Ohio because of a job opportunity for his father. This might have added to his later issues.

- Also, as a child, he was fascinated with animals' bodies and though he never slayed them, he collected their bodies. The result of this was found in 1975 by a few boys at night. It was a dog that was 100% skinned and had its head on a stick. This is an early sign of necrophilia.

- In his early teens, he had no friends, and was unthinkably tense.

Surprisingly, Dahmer was born into a lovely home, with loving parents. He was not abused for several years,and his parents. However, at the age of six, he underwent a surgery to remove a hernia from his brain. This might have, along with his parents' eventual divorce, be the root of his extreme crimes.

Background