Psychology Unplugged Bipolar Disorder vs. Borderline Personality Disorder: Biology vs. The Self
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Jan 25, 2026 They explain why bipolar and borderline personality are often confused and how that confusion harms care. They compare episodic, biologically driven mood swings with rapid interpersonal reactivity and identity instability. They cover signs of mania and subtler bipolar forms, comorbidity with ADHD, and practical tools like journaling and coordinated medication plus therapy.
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Same Symptoms, Different Labels
- Dr. Nigra recounts seeing two patients with identical symptoms leave with different diagnoses and sometimes neither was right.
- He warns that wrong labels lead to years on ineffective meds and invalidating therapy.
Diagnose Patterns, Not Isolated Symptoms
- Do not treat symptoms as diagnoses; focus on patterns and timelines to reach a correct diagnosis.
- Use structured interviews and longer assessments rather than single-session checklists when possible.
Watch For The Biological Signs Of Mania
- Track decreased need for sleep, racing thoughts, pressured speech, grandiosity, and risky pleasurable behaviors to spot mania/hypomania.
- Use those simultaneous signs, not just emotional reactivity, to distinguish manic episodes.