Psychosis in BPD
Psychosis in BPD is actually pretty common.
This information is from one study conducted in 2013 using DSM-III-R criteria, with a sample size of 362 people (290 of those with BPD).
All of the types of disturbed but non-psychotic thought studied were common.
- This includes odd thinking, unusual perceptual experiences (UPEs), non-delusional paranoia, and depersonalisation and derealisation
- 86% reported odd thinking, 76% reported UPEs, and 87% reported paranoia
- (If you’re familiar with StPD, you’ll recognise that those are part of the StPD criteria - further evidence of the huge overlap of BPD & StPD)
- This study suggests that splitting, especially on themselves, is a type of ideas of reference
Quasi-psychotic thought was common among borderline patients […] (57%).
- This paper suggests that fears of abandonment is a type of quasi-psychotic thought
- (Quasi-psychosis, in this paper, means psychosis that is limited, short-lived, and non-bizarre)
A significantly higher percentage of borderline patients than […] comparison subjects reported true-psychotic hallucinations (but not delusions) and any type of true-psychotic thought. [...] True-psychotic experiences […] are rare among our sample of borderline inpatients. At no time period, was the percentage of these patients reporting any true-psychotic thought (delusions and/or hallucinations) greater than 7%.
- 7% is still a significant number
- Delusions were more common than hallucinations (this was true for quasi-delusions too)
- (True-psychosis in this paper means psychosis that is widespread (in thoughts or behaviour), long-term, and bizarre)