Answer:
In order to meet the diagnostic criteria for bipolar I disorder, as outlined in the DSM-5 (the Diagnostic and Statistical Manual of Mental Disorders), a person must experience at least one episode of mania or hypomania, as well as episodes of depression. Bipolar I disorder is characterized by extreme mood swings, with periods of elevated or irritable mood (called manic or hypomanic episodes) alternating with periods of depressed mood.
During a manic episode, a person may experience symptoms such as elevated or irritable mood, increased energy and activity levels, racing thoughts, difficulty sleeping, impulsive behavior, and poor judgment. These symptoms must be severe enough to cause significant impairment in daily functioning, such as at work or school, or in relationships with others.
In order to be diagnosed with bipolar I disorder, a person must also have experienced at least one episode of depression, characterized by symptoms such as sadness, loss of interest in activities, difficulty concentrating, changes in appetite and sleep, and feelings of worthlessness or hopelessness.
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