Clues to the underlying causes of boredom have come from patients who suffer traumatic brain injuries (TBI). People with TBI often begin to indulge in riskier activities after their accidents.

从一些有脑外伤(TBI)的病人身上，可以得到有关烦闷成因的一些线索：脑外伤的人，最初的表现就是容易沉湎于危险程度较高的活动。

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And while it’s not clear exactly what causes hikikomori, traumatic events such as bullying, failing a test or not getting a job are often reported as triggers.

现在，“青年隐蔽”的病因还不明确，但媒体通常报道说欺凌、考试不及格或者找不到工作之类的创伤性事件导致了这一问题。

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Objective To evaluate the effect of vitreous surgery in cases of recurrent traumatic retinal detachment and analyze the causes.

目的评价玻璃体手术治疗外伤性复发性视网膜脱离的效果，分析其复发的原因。

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Ironically, the most complete study to date on traumatic brain injuries from football and other causes is due out today. 33 deceased NFL players are included in the study.

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He said there could be a range of causes for the condition, such as post-traumatic stress disorder or Parkinson's Disease.

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