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Shirley suffers from alternating or intermixed periods of extreme mania and extreme depression known as bipolar disorder.

What is bipolar disorder?

Bipolar disorder is a mental cognitive condition where the individual may exhibit different alternating periods of euphoria followed by depression.

Bipolar disorder is a serious mental problem and therefore this condition must be treated in proper clinical settings.

In conclusion, Shirley suffers from bipolar disorder.

Learn more about bipolar disorder here:

https://brainly.com/question/6604104

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