I live in Indiana, and find it strange they have no recommended age for home alone yet, they do have an age requirement as to when a child can be left in the care of a sibling child, and that age is 11.
However, dissociative identity disorder is a severe form of dissociation, a mental process which produces a lack of connection in a person's thoughts, memories, feelings, actions, or sense of identity. Dissociative identity disorder is thought to stem from a combination of factors that may include trauma experienced by the person with the disorder.
A mental disorder, also called a mental illness, psychological disorder or psychiatric disorder, is mental or behavioral pattern that causes either suffering or a poor ability to function in ordinary life. Many disorders are described. Conditions that are excluded include social norms.