Objective: This study aims to assess benzodiazepine overuse, in particular indications, prolonged use, and dependence for usage in out-patients treated at the internal medicine clinic of Chiang Mai University Hospital. Methods: The indications of benzodiazepine usage were examined by using the Thai Hospital Anxiety and Depression Scale in patients who were started on benzodiazepines. The duration of benzodiazepine usage was classified into: i) less than 1 month; ii) 1-6 months; and iii) longer than 6 months, and benzodiazepine dependence was assessed by using the Severity of Dependence Scale. Results: Of 40 out-patients started on benzodiazepines, only one of them (2.5%) had clinically significant anxiety. Of 58 outpatients receiving benzodiazepines, 42 patients (72.4%) had used benzodiazepines longer than 6 months. In addition, 8 patients (13.8%) were dependent on benzodiazepines. Conclusions: Benzodiazepine overuse is common in physically ill out-patients, even in the university hospital. Almost half of the surveyed patients appear to have prolonged benzodiazepine use; however, only a few patients are dependent on benzodiazepines.

BACKGROUNDEarly-onset major depressive disorder (MDD) (EOD) is often particularly malignant due to its special clinical features, accompanying impaired social function, protracted recovery time, and frequent recurrence. This study aimed to observe the effects of age onset on clinical characteristics and social function in MDD patients in Asia.

METHODSIn total, 547 out-patients aged 18-65 years who were from 13 study sites in five Asian countries were included. These patients had MDD diagnose according to the Diagnostic and Statistical Manual of Mental Disorders, 4 th Edition criteria. Clinical features and social function were assessed using Symptom Checklist-90-revised (SCL-90-R) and Sheehan Disability Scale (SDS). Quality of life was assessed by a 36-item Short-form Health Survey (SF-36). Analyses were performed using a continuous or dichotomous (cut-off: 30 years) age-of-onset indicator.

RESULTSEarly-onset MDD (EOD, <30 years) was associated with longer illness (P = 0.003), unmarried status (P < 0.001), higher neuroticism (P ≤ 0.002) based on the SCL-90-R, and more limited social function and mental health (P = 0.006, P = 0.007) based on the SF-36 and SDS. The impairment of social function and clinical severity were more prominent at in-patients with younger onset ages. Special clinical features and more impaired social function and quality of life were associated with EOD, as in western studies.

CONCLUSIONSEOD often follows higher levels of neuroticism. Age of onset of MDD may be a predictor of clinical features and impaired social function, allowing earlier diagnosis and treatment.

Adult ; Age of Onset ; Aged ; Anxiety Disorders ; etiology ; Depressive Disorder, Major ; physiopathology ; psychology ; Female ; Humans ; Male ; Middle Aged ; Neuroticism ; Quality of Life ; Young Adult