Duloxetine hydrochloride，a serotonin-norepinephrine reuptake inhibitor （SNRIs）， is a commonly used antidepressants. Its mechanism of action involves increasing synaptic monoamine neurotransmitters concentration， leading to antidepressant effects. While gastrointestinal reactions and elevated blood pressure are common side effects， duloxetine can rarely induce syndrome of inappropriate antidiuretic hormone secretion （SIADH）. This case report presents a patient with depression who developed SIADH following duloxetine hydrochloride initiation， with the main clinical manifestation being restless thirst and excessive drinking. This case is presented to raise awareness among clinicians of this rare yet potentially serious adverse effect of duloxetine treatment.

ObjectiveTo investigate the mental health status of the front-line anti-epidemic medical staff during the COVID-19 outbreak， so as to provide references for the targeted psychological intervention and improvement of mental health status. MethodsA total of 162 front-line medical staff who worked in Lanzhou Heavy Particles Hospital of Gansu Province from October to December 2021 were were enrolled， and assessed using self-designed general information questionnaire， Self-rating Anxiety Scale （SAS） and Self-rating Depression Scale （SDS）. ResultsA total of 144 medical staff completed the valid questionnaire survey， and 17 （11.81%） and 19 （13.19%） cases were found to have anxiety and depression， respectively. The detection rate of anxiety yielded statistical difference among medical staff with different anti-epidemic working hours （χ²=10.602， P<0.01）， and the detection rate of depression demonstrated statistical differences among medical staff with different occupations， family history of depression and anti-epidemic working hours （χ²=5.486， 4.039， 7.526， P<0.05）. ConclusionDuring the COVID-19 outbreak， front-line medical staff develop varying degrees of anxiety and depression. Furthermore， the detection rate of anxiety is relatively high among the staff with long anti-epidemic working hours， and the detection rate of depression is relatively high among the doctors， the staff with family history of depression and long anti-epidemic working hours.