Autism is not a psychological disorder.

孤独症不是一个心理障碍。

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A much more extreme type of narcissism also exists, and it's classified as a psychological disorder.

还有一种更为极端的自恋类型，它被看成是一种心理障碍。

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Narcissistic personality disorder is a much more extreme form, and is classified as a psychological disorder.

自恋型人格障碍是一种更为极端的自恋类型，它被认为是一种心理疾病。

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If your dentist suspects a significant psychological component to your teeth grinding or a sleep-related disorder, you may be referred to a therapist, counselor or sleep specialist.

CNN: Bruxism/teeth grinding

However, Britney is said to have a psychological condition, such as bipolar disorder, that justifies the continued need for conservatorship.

FORBES: When Will Britney Spears Be Free Of Conservatorship?

Whereas people with "regular old depression" tend to be highly vulnerable to psychological stress, one way of thinking about bipolar disorder is that it is a condition of extreme sensitivity to the circles of time.

CNN: Can keeping a routine help control bipolar symptoms?