A client who is talking calmly and rationally all of a sudden begins whining and complaining like a spoiled child. If that client suffers from true dissociative identity disorder, the client just experienced:

The client experienced a switching

Explanation:

Dissociative identity disorder, formerly known as multiple personality disorder, is a mental illness that is characterized by the presence of two identities, where they are presented alternately. The person who has this disorder is not able to remember personal information, daily events or traumatic events. Other symptoms also involve the feeling of being separated from your being and emotions, high levels of stress and problems to deal with situations of daily living.

In the case of the client, the action that has manifested from being a calm and rational moment to start acting like a spoiled child is one of the symptoms of this disorder called switching.

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