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Benzodiazepine receipt in adults with psychogenic non-epileptic seizures in the USA.

Xu KY, Nascimento FA, Lin BY, Park TW, Maust DT, Samples H, Bushnell GA. Benzodiazepine receipt in adults with psychogenic non-epileptic seizures in the USA. BMJ neurology open. 2024 Sep 18; 6(2):e000767.

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Abstract:

BACKGROUND: Characterising benzodiazepine (BZD) prescribing to individuals with psychogenic non-epileptic seizures (PNES) is important for optimising PNES outcomes, but existing data is lacking. METHODS: Using a nationwide administrative claims database (2016-2022), incident PNES was defined as an International classification of diseases, tenth revision, clinical modification (ICD-10-CM) diagnosis in an inpatient or outpatient healthcare encounter after a 1-year period with no documented diagnosis. We described clinical characteristics of adults with incident PNES and estimated the prevalence of outpatient BZD treatment in the baseline year and 30-day follow-up period, with secondary analyses stratifying by baseline ES, anxiety and/or insomnia diagnoses, representing common indications for BZD receipt. We used logistic regression to evaluate predictors of post-PNES BZD receipt. RESULTS: Among 20?848 adults with incident PNES diagnosis, 33.1% and 15.1% received BZDs in the year and month prior to PNES diagnosis, respectively, and 18.1% received BZDs in the month following a PNES diagnosis; 5.4% of those without prior BZD prescriptions received BZDs after diagnosis. The median days'' supply was 30 days, with clonazepam, alprazolam and lorazepam representing the most common BZDs prescribed after PNES. Most people who received BZDs in the month prior to PNES diagnosis remained on BZDs in the month after PNES diagnosis (62.9%), with similar findings in the subcohorts without ES, anxiety and/or insomnia. Baseline BZD receipt and anxiety disorders, but not baseline ES diagnoses, were strong independent predictors of post-PNES BZD receipt. CONCLUSIONS: While new BZD initiation is rare after PNES, most individuals with BZD scripts 1?month before PNES continue scripts after diagnosis.





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