Article

Sleep Patterns in Borderline Personality Disorder

Sleep disturbances in borderline personality disorder are relatively unrecognized.

blackday/AdobeStock

blackday/AdobeStock

Borderline personality disorder has many clinical features, including relatively unrecognized sleep disturbances. Generally, sleep problems are not considered a primary characteristic of this condition, but research is beginning to identify specific patterns of sleep disruptions that are associated with the disorder.

Borderline personality disorder is characterized by substantial emotional instability, relationship strains, behavioral problems, and difficulties with self-image. It is disruptive for the person who has the disorder, as well as for other individuals in their lives. There is no effective or recommended pharmacological treatment for this chronic disorder. The clinical management, which consists of behavioral and cognitive therapies, is challenging.

While the criteria for diagnosis of borderline personality disorder differ from the criteria for diagnosis of bipolar disorder, there are some similarities, and it can be difficult at times to differentiate the 2 conditions.1 Bipolar disorder is a psychiatric disorder characterized by fluctuations in mood and energy levels, often with features of mania and depression. Borderline personality disorder and bipolar disorder can both profoundly interfere with an affected patient’s quality of life, and they both often cause mood instability, hopelessness, and other overlapping symptoms. Unlike borderline personality disorder, bipolar disorder is often treated with prescription medication, along with counseling and behavioral therapy. A misdiagnosis of either of these disorders can delay proper referral to a psychiatrist or behavioral specialist and delay the timely implementation of appropriate therapy.

Several studies have shown that patients who have borderline personality disorder experience substantial variability in their sleep times from night to night when compared with the general population. These trends have been documented by clinical history and questionaries, and objectively with actigraphy and polysomnogram studies.2 Circadian rhythm disturbance is a disruptive condition that causes fluctuations in sleep rhythms, with phase delay and misaligned rest-activity pattens. Patients who have circadian rhythm sleep disturbance can experience irregular sleep patterns, with inconsistency and unpredictability from day to day. This causes a lack of adequate sleep, as well as low energy and concentration during the day. This sleep disturbance has been associated with borderline personality disorder.

Furthermore, the severity of certain symptoms of borderline personality disorder has been shown to correlate with certain actigraphy patterns that demonstrate daytime and nighttime abnormalities that are consistent with circadian sleep disturbance. In one study, patients who carried a diagnosis of borderline personality disorder and who had high levels of impulsivity and mood instability showed substantial phase delayed daytime activity patterns, low inter daily stability, weak amplitude, and greater fragmentation of rest activity states over a study duration of 28 days.3 These patterns were not noted in the study participants who had a diagnosis of bipolar disorder or in the controls. Another study showed that patients with borderline personality disorder had delayed phase of nighttime rest patterns, delayed daytime activity onset, as well as delayed temperature phase, while controls and patients who had bipolar disorder did not exhibit these features.4

While there appears to be a correlation between the severity of symptoms of borderline personality disorder and circadian rhythm dysfunction, the clinical implications have not been established, nor has any specific cause-and-effect relationship. Whether the emotional and behavioral aspects of borderline personality disorder affect circadian rhythm regulation, or the circadian rhythm dysregulation affects symptoms of borderline personality disorder is not clear. The distinct differences in circadian rhythm disturbance patterns between patients with borderline personality disorder and patients with bipolar disorder that has been replicated in several studies is interesting, especially given the similarities between the 2 conditions.

Circadian rhythm disturbance is objectively quantifiable, but difficult to treat, and these observations do not clearly provide direction for the treatment of borderline personality disorder. However, awareness and treatment of sleep disturbances are important aspects of patient management. Screening tests, including interviews and actigraphy, can identify sleep problems that patients might not have otherwise reported if they did not know those problems were abnormal. Patients who would benefit from appropriate therapy for their sleep disorder may experience an improved quality of life if treatment is implemented. Furthermore, the diagnostic signs can potentially provide an adjunct in the diagnostic process for patients when borderline personality disorder is considered in the differential diagnosis. Because borderline personality disorder lacks objective criteria, it is possible that some patients may feel empowered, heard, and understood when they are made aware of an objective feature of their condition. This may potentially improve compliance with treatment for some patients.

Dr Moawad is associate editor, Humanities in Neurology; clinical assistant professor, Case Western Reserve University School of Medicine, Division of Medical Education; and editor in chief emeritus of Neurology Times (2017-2019).

References

1. Palmer BA, Pahwa M, Geske JR, et al. Self-report screening instruments differentiate bipolar disorder and borderline personality disorder. Brain Behav. 2021;11(7):e02201.

2. McGowan NM, Saunders KEA. The emerging circadian phenotype of borderline personality disorder: mechanisms, opportunities and future directions. Curr Psychiatry Rep. 2021;23(5):30.

3. McGowan NM, Goodwin GM, Bilderbeck AC, Saunders KEA. Actigraphic patterns, impulsivity and mood instability in bipolar disorder, borderline personality disorder and healthy controls. Acta Psychiatr Scand. 2020;141(4):374-384.

4. McGowan NM, Goodwin GM, Bilderbeck AC, Saunders KEA. Circadian rest-activity patterns in bipolar disorder and borderline personality disorder. Transl Psychiatry. 2019;9(1):195.

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