Division of Psychological Medicine, Institute of Psychiatry, King's College London, London, United Kingdom.
Epidemiology. 2010 Sep;21(5):744-7. doi: 10.1097/EDE.0b013e3181e9edc4.
Mass psychogenic illness refers to outbreaks of illness attributed to a toxic agent but for which no plausible organic cause is found. We determined the frequency and predictors of mass psychogenic illness within a sample of chemical incidents.
Information was collected on a random sample of 280 chemical incidents. We developed consensus operational criteria for mass psychogenic illness and estimated its frequency. We then assessed environmental, emergency, and health service indicators for their association with mass psychogenic illness.
Nineteen "chemical incidents" were probable episodes of mass psychogenic illness. This represented 16% of incidents for which people reported symptoms and 7% of all incidents. Odor was a robust predictor of mass psychogenic illness. These illnesses were especially likely to occur in schools or healthcare facilities.
A substantial minority of chemical incidents may be mass psychogenic illness.
群体性心因性疾病是指因毒性物质而引发的疾病爆发，但却找不到合理的器质性病因。我们在一组化学事故样本中确定了群体性心因性疾病的发生频率和预测因素。
我们收集了随机抽取的 280 起化学事故的信息。我们制定了群体性心因性疾病的共识操作标准，并估算了其发生频率。然后，我们评估了环境、应急和卫生服务指标与群体性心因性疾病的关联。
19 起“化学事故”可能是群体性心因性疾病的发作。这占报告症状的事故的 16%，占所有事故的 7%。气味是群体性心因性疾病的一个强有力的预测因素。这些疾病尤其容易发生在学校或医疗机构。
相当一部分化学事故可能是群体性心因性疾病。
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