Vanna, who is 40, apparently believes that she is a 20-year-old woman. Suddenly, she starts to speak and behave very differently, and says she no longer thinks of herself as "Vanna." Instead, she claims to be Elise, a 10-year-old child. It is likely that Vanna has just experienced a .

Dissociative identity disorder

Explanation:

DID also known as dissociative identity disorder was previously called multiple personality disorder. This is considered to be a mental disorder in which victims claim to have at least two distinct personality states that is quite relatively enduring. This disorder is usually accompanies by gaps in memory which cannot be explained by ordinary forgetfulness. Vanna has 3 personalities in her case, the 40 years old Vanna, the 20 year old woman and Elise, who is a 10-year-old child.

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