Difference Between Bipolar Disorder and Borderline Personality Disorder

Timing and Pattern of Mood Symptoms

People living with borderline personality disorder struggle with affective dysregulation — big, painful, emotional reactions to stimuli that would not typically cause so much internal and external upheaval. They struggle chronically with anger, sadness, and anxiety symptoms, sometimes with big episodes such as rages or explosive behavior. These are the baseline for a person with this disorder — these challenges occur often, and the mood changes can be minute to minute or hour to hour. The mood disruptions are most often triggered by something, often a frustration or perceived rejection or fear of abandonment.

The mood states of bipolar disorder last days to weeks rather than minutes or hours. Hypomania or mania and depressive symptoms are a change from baseline (as noted above) and occur for longer periods of time. While the episodes may be triggered by a stressful event, they can occur without any clear trigger.

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