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Borderline personality disorder (BPD) is clinically susceptible to omission because the irritability, anxiety and other symptoms of such patients are easily confused with depression (major depression disorder, MDD) and bipolar disorder (BP), but in fact, BPD is a serious disease that can lead to self-harm and suicide.

Diagnostic criteria for borderline personality disorder relationships and cheating.

 BPD’s DSM-5 diagnostic criteria are as follows:

1. Strive to avoid real or imagined abandonment (Note: Does not include suicide or self-harm in subparagraph 5 of the diagnostic criteria).

2. An unstable and tense pattern of interpersonal relationships characterized by alternating changes between extreme idealization and extreme debasement.

3. Identity disorder: a significant persistent and unserializing self-image or self-feeling.

4. Impulsiveness with potential self-harm in at least 2 areas (e.g., consumption, sexual behaviour, substance abuse, reckless driving, overeagerness) (Note: Does not include suicide or self-harm in subparagraph 5 of the diagnostic criteria).

5. Repeated acts of suicide, suicidal gestures or threats of self-harm.

6. Emotional instability due to significant state-of-mind reactions (e.g., intense seizures of irritability, irritability, or anxiety, usually last for several hours, rarely more than a few days). 

7. Chronic sense of emptiness.

8. Inappropriately intense anger or difficulty controlling anger (e.g., frequent tantrums, persistent anger, repetitive fights).

9. Short-lived stress-related paranoia or severe separation symptoms.

Symptoms that meet the above 5 (and above) can be diagnosed.

Psychodesting found that emotional instability was an important criterion for screening the disease in the nine BPD criteria of DSM-IV/5, but the study included a higher heterogeneity of the disease and a lower likelihood of some subjects having BPD.

Researchers such as Zimmerman of Brown University assessed BPD symptoms in MDD and BP patients under the Rhode Island Improvement Diagnostic Assessment and Services program. The results were published in January 2019 in J Clin Python.

“Diagnostic criteria for borderline personality disorder relationships and cheating”

 How to do this:

The subjects were from 3,674 outpatients from December 1995 to April 2014, and the researchers diagnosed their BPD symptoms based on DSM-IV in a semi-structured interview. The subjects were divided into three groups: the previous primary diagnosis was MDD, the previous primary diagnosis was BP and the remaining patients.


The sensitivity and negative predictive values of the standard for emotional instability were higher than 90% in MDD, BP, and other diagnosed patients, significantly higher than other criteria.


In practice, clinicians need to focus on individual characteristics, such as emotional instability, in addition to being prone to common mental disorders such as BPD, to prevent the diagnosis of BPD and other clinical diseases.

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