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Background The COVID-19 pandemic and associated lockdown may have psychiatric consequences and increase the number of psychiatric emergency consultations. Methods Three psychiatric centers in Paris and its suburbs took part in the study. We compared the number of total psychiatric emergency consultations during the 4 first weeks of the lockdown in France to the corresponding 4 weeks in 2019. We also compared the number of consultations during these 4-week time periods in 2020 and 2019 across different diagnostic categories. Findings In the 4 first weeks of the lockdown in France, 553 emergency psychiatry consultations were carried out, compared to 1224 consultations during the corresponding period of 2019, representing a 54.8 % decrease. This decrease was evident across all psychiatric disorders, including anxiety (number of consultations in 2020 representing 36.1 % of 2019), mood (41.1 %), and psychotic disorders (57.3 %). The number of suicide attempts also decreased (number of suicide attempts in 2020 representing 42.6 % of 2019). In comparison to 2019, the proportion of total consultations for anxiety disorders also decreased (16.6 % vs. 20.8 %), whilst the proportion of total consultations increased for psychotic disorders (31.1 % vs. 24.1 %). Conclusions The total number of psychiatric emergency consultations during lockdown dramatically decreased. The psychological consequences of lockdown may be delayed, indicating that psychiatric services should be prepared for a secondary increase in emergency presentations.

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Excessive daytime sleepiness is a frequent and a highly disruptive symptom to the daily routine of children with Prader-Willi Syndrome (PWS) and their families. The objective of the study was to evaluate the efficacy of modafinil, a central stimulant, on excessive daytime sleepiness in children and adolescents with PWS. The efficacy of modafinil was evaluated in this open label pilot study comparing the Epworth sleepiness scale before and after treatment. Ten patients with molecularly confirmed PWS and a complaint of excessive daytime sleepiness underwent a night-time sleep recording and multiple sleep latency tests. One patient was excluded because of severe obstructive sleep apnea syndrome. Nine patients (4 males) with median age of 16 years (8-21) received modafinil at a starting dose of 100 mg/day. We found that all patients had excessive daytime sleepiness with an Epworth sleepiness scale at 14 (11-20) and mean sleep latency on multiple sleep latency tests at 5 (3-6) minutes. Moreover, six patients had at least two sleep-onset rapid eye movement periods showing a narcolepsy-like phenotype. Modafinil significantly improved sleepiness in all patients on the Epworth sleepiness scale from 14 (11-20) to 4 (3-12), (P = 0.007). Body mass index of the patients did not change significantly under treatment. No side effects were reported, and the drug was well-tolerated. We posit that this open label case series shows good efficacy of modafinil in nine children and adolescents with PWS.

To date, we have no French data about the psychiatric consequences of the Covid-19 pandemic and the confinement. In the largest French psychiatric emergency centre, we compared the average number of consultations per day during the confinement with the same period preceding the confinement and with the same periods of previous years, and we observed a significant drop in attendance. Our team had to adapt promptly to these changes in public mental health services, and we set up a telephone hotline dedicated to psychiatric patients and their families, in order to prevent a secondary psychiatric crisis.