Borderline Personality Disorder in Women: Prevalence, Risk & Key Differences

Key things to know What the evidence shows
How common is it? No reliable global female-only pooled estimate
Is it more common among women? Historically diagnosed much more often clinically; population sex gap appears considerably smaller
Are women at higher risk? Sex itself may not confer large population-level risk
How much higher is the risk? Male:female clinical-interview prevalence ratio from 2026 review ≈ 43:100
How often can it be missed? High; can be misdiagnosed as bipolar/MDD/PTSD
Does it show up differently among women? Yes somewhat
How might it look different? More internalising symptoms in many studies: affective instability, self-harm and mood/eating comorbidity
What commonly occurs alongside it? MDD; PTSD; anxiety; eating disorders
What can it be confused with? Bipolar disorder; PTSD/CPTSD; ADHD; MDD; eating disorders
Common screening tool MSI-BPD
Separate screening tool for women None
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