Revisiting the prevalence of bipolar disorder: implications of a broader spectrum model - Summary - MDSpire

Revisiting the prevalence of bipolar disorder: implications of a broader spectrum model

  • By

  • Anatoly Kreinin

  • March 23, 2026

  • 0 min

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Objective:

To examine whether current diagnostic frameworks systematically underestimate bipolar spectrum phenomena, which may limit diagnostic sensitivity and clinical understanding.

Key Findings:
  • Bipolar spectrum disorders (BPSD) are substantially underdiagnosed, which may hinder effective treatment.
  • Prevalence may exceed traditional estimates, with a suggested range of 15-20%.
  • Conditions like BPD, ADHD, or anxiety may overlap with bipolar spectrum presentations, complicating diagnosis.
  • The continued use of BPD as a diagnostic category is questioned due to poor construct validity.
Interpretation:

Reconceptualizing bipolar disorder as a spectrum within a longitudinal model is essential for improving diagnostic accuracy and treatment outcomes, potentially transforming clinical practice.

Limitations:
  • Prevalence estimates are exploratory and conceptual, not definitive.
  • Variability in diagnostic definitions and study designs contributes to heterogeneity in reported rates.
  • The review is not exhaustive and includes contrasting perspectives.
  • Potential biases in the studies reviewed may affect the findings.
Conclusion:

A spectrum model for bipolar disorder could enhance understanding and treatment, pending empirical validation to ensure its effectiveness.

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