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Introduction Antidepressant-induced galactorrhea and increases in prolactin levels have been sporadically reported among SSRI-related side effects. Objectives Current rapport presents a case of 39 y.o. female who developed several adverse effects on paroxetine - including galactorrhoea - which improved on discontinuation of the drug. Methods Case discussion of 39-year old woman who was treated with paroxetine for her panic disorder and developed galactorrhoea with hyperprolactinemia that resolved upon discontinuation of the drug. Additionally, authors performed the literature search using PubMed and Embase to review the similar cases and used PDSP Database to assess the latest pharmacodynamic (PD) properties of paroxetine and other SSRI’s. Results Literature review (1966–2020) revealed 24 prior published case reports of SSRI-induced galactorrhea in users of paroxetine (n=4), escitalopram (n=4), sertraline (n=2), citalopram (n=2), fluoxetine (n=3), fluvoxamine (n=2) and other non-assessable reports (n=7). Elevated prolactin levels were mostly observed with paroxetine and escitalopram and rarely with fluoxetine, fluvoxamine and sertraline. PD-assessment showed the highest binding affinity of paroxetine and escitalopram to SERT (kPi = 0.07-0.2 and 0.8-1.1 nmol/L respectively) compared to other SSRI’s, in absence of other relevant PD-properties Conclusions Increasing body of evidence shows that galactorrhea does occur among paroxetine female users. Pharmacodynamic mechanism of action is poorly understood but given the modern insights in relationship in serotonin and dopamine circuits, we suggest that strong SERT inhibitory properties of paroxetine might lead to a tonic suppressive influence on dopamine neurotransmission. This physiological link may explain an increase in prolactin levels through dopamine depletion in the tuberoinfundibular pathway. Disclosure No significant relationships.

Introduction Known risk factors for developing of first-time psychosis in patients with deep brain stimulator (DBS) include older age, short time after implant placement and cerebral target for stimulation. In particular, stimulation of subtalamic nucleus and globus pallidus internus has been shown to elicit psychotic symptoms in various case reports. To date, there are no cases describing onset of psychosis due to DBS in the ventralis intermediate nucleus (Vim) of the thalamus. Objectives Case describtion of psychotic episode provoked by DBS in Vim region Methods Case report of 70 y.o. female with unilateral DBS from 2012 in Vim for essential tremor, who developed therapy resistant psychotic symptoms right after adjusted settings of the DBS. Results Psychotic onset of otherwise healthy 70 y.o. patient occurred and gradually worsened after adjustment of DBS settings in absence of other iatrogenic factors, including medication and comorbidity, and required involuntary hospitalization one week after beginning of psychosis. Treatment after hospitalization comprised olanzapine 10 mg. 1dd1 did not cause resolvent of psychosis. Because of therapy resistance to psychofarmaca and worsening of psychotic symptoms, by way of exception neurologists had to change the settings back to basic leading to complete and sustained remission of psychosis within two days. Conclusions Among side effects of DBS in Vim, psychotic symptoms have never been reported. However, as in our patient, psychosis occurred after changes of settings in DBS and presented acutely, was severe, resulted in involuntary hospitalization and was therapy resistant. Pathophysiology of DBS-induced psychosis in Vim region is not known and requires further investigation. Disclosure No significant relationships.

Introduction The spread of the corona virus (COVID-19) has an enormous psychosocial impact on humanity across the globe, resulting in an increase in mental health issues. There are no specific diagnostic instruments that could identify COVID-19 related mental health problems. In recent months, new scales have been developed to identify COVID-19 related problems. Objectives Our objective was to investigate the clinical utility of these new assessment instruments. Methods We performed a literature search, using Pubmed, EMBASE, Scopus and Cochrane library databases, to search for new scales identifying COVID-19 related mental health problems. Results During the first half of the year 2020, we found five published new self-report measurement instruments: Coronavirus Anxiety Scale (CAS), the COVID Stress Scales (CSS), the Fear of COVID-19 Scale (FCV-19S), the Obsession with COVID-19 Scale (OCS), and the Questionnaire on Perception of Threat from COVID-19. These instruments have been validated in a group of middle-aged ambulatory patients. Conclusions These new instruments might be useful in non-clinical settings. Although the psychometric reports are promising, the instruments have been validated in a less vulnerable group of patients. Future validation studies should also comprise other age groups, particularly the old and more vulnerable population. Disclosure No significant relationships.

Introduction In recent years, more and more attention has been paid to the risks of using SSRIs. This group of antidepressants may be associated with an increased risk of gastrointestinal bleeding. This risk would be even further increased with concomitant use of NSAIDs. A number of studies have described this interaction, however they reported conflicting results. Objectives Our objective was to investigate the risk of gastrointestinal bleeding with SSRIs, with or without NSAID use. Methods We performed a literature search, using Pubmed, EMBASE, and Cochrane library, in order to investigate controlled trials, cohort, case-control and cross-sectional studies that reported the incidence of gastrointestinal bleeding s on SSRIs with or without concurrent NSAID use, compared to placebo or no treatment. Results 15 case-control studies and 4 cohort studies were included in the analysis. There was an increased risk of gastrointestinal bleeding with SSRIs in the cohort studies and case-control studies. The risk of gastrointestinal bleeding was even further increased with the combined use of both SSRIs and NSAIDs. Conclusions SSRIs are associated with a modest increase of gastrointestinal bleeding. However, this risk is significantly increased when SSRIs are used in combination with NSAIDs. Psychiatrists should be aware of the hazards in prescribing these medications together. Disclosure No significant relationships.

Introduction Psychotropic medications are frequently co-prescribed with antiretroviral therapy (ART). Hepatic metabolism both of AP and ART involves the cytochrome P450 enzyme system, potentially leading to a multitude of pharmacokinetic (PK) interactions and serious adverse side effects. The magnitude and clinical impact of PK-interactions can vary significantly. Objectives The scope of this review is to summarize the currently available data regarding drug-drug interactions (DDI) between AP and ART, and to provide recommendations for their management. Methods A formal search of Embase, Cochrane and Medline was performed, searching for human studies from inception till 2017 on PK-interactions between AP and ART and reporting clinical toxicity as outcomes. Authors also provide their expertise on magnitude and clinical relevance of DDI using PK interaction chart. Results Ten case reports including total of 13 patient were analyzed, comprising following AP: aripiprazole (N=2), risperidone (N=4), quetiapine (N=3) and lurasidone (N=1) in combination with various ART regiments. Significant PK-interactions were to occur in cases when aripiprazole was combined with ritonavir and/or cobicistat or efavirenz and/or darunavir; risperidone with indinavir of ritonavir; quetiapine with ritonavir and atazanavir/ritonavir; lurasidone with atazanavir. Adverse events occurred in combinations of aripiprazole with ritonavir/darunavir, risperidone with ritonavir or indinavir, quetiapine with atazanavir and lurasidone with atazanavir. Conclusions Psychotropics and antiretrovirals may be used safely, particularly when known DDIs are proactively managed. Clinicians should be aware of the pharmacokinetic and pharmacodynamic properties of these agents to best direct therapy and to provide optimal patient care Disclosure No significant relationships.

Introduction Only three population-based observational human studies provided evidence that benzodiazepines (BZD) are associated with clinically adverse respiratory outcome. Striking was the finding that BZD drug exposure was associated with a 32% significantly increased adjusted risk of all-cause mortality, including, of note, the subgroup of individuals with no comorbidities. Causation, however, cannot be inferred in observational study design and, highly likely, recipients received BZD’s in these studies to help treating anxiety related to inter alia pre-existing respiratory symptoms. Objectives Based on one fatal particular case, authors of current rapport explain what can go wrong when BZD’s are given in patient with respiratory impairment. Methods Authors provide a model on how an increase in carbon dioxide can lead to impaired cerebral autoregulation in a person with pre-existing respiratory decompensation. Discussion of integrative metabolic and vascular physiology. Results Case rapport of a 18 y.o. otherwise healthy man, who was hospitalized with a novel episode of diabetic ketoacidosis accompanied by profound hypocapnia and anxiety, and who deteriorated and died shortly after airway management because of a clinically important acid-base balance disturbance caused by increased carbon dioxide. All the blood tests and results of respiratory monitoring were collected and carefully assessed. Conclusions Current case suggests that the P(CO(2))--HCO(3) hypothesis is consistent with known data on impaired cerebral autoregulation in diabetic ketoacidosis, driven mainly by increased levels of pCO2. In our opinion, it indicates the recommendation not to administrate BZD’s in patients with pre-existing compensatory hyperventilation as it may counter to the logic of adaptive physiology. Disclosure No significant relationships.