WordNet

the process of using your mind to consider something carefully; "thinking always made him frown"; "she paused for thought" (同)thought, thought_process, cerebration, intellection, mentation
fully detailed and specific about particulars; "a circumstantial report about the debate"

PrepTutorEJDIC

『思考力のある』,考える;思慮深い / 考えること,思考,思索 / 考え,意見,判断
《文》状況の,状競による / 本質的でない,付随的な / 詳細な,詳しい

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/05/31 16:14:07」(JST)

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Circumstantial speech (also referred to as circumstantiality) is a communication disorder in which the focus of a conversation drifts, but often comes back to the point.^[1] In circumstantiality, unnecessary details and irrelevant remarks cause a delay in getting to the point.^[2]^{[dead link]}

Circumstantial speech is less severe than tangential speech in which the speaker wanders and drifts and usually never returns to the original topic, and is far less severe than logorrhea.^[3]

Symptoms

A person afflicted with circumstantiality has slowed thinking and invariably talks at length about irrelevant and trivial details (i.e. circumstances).^[4] Eliciting information from such a person can be difficult since circumstantiality makes it hard for the individual to stay on topic. In most instances however, the relevant details are eventually achieved.
The disorder is often associated with schizophrenia and obsessive-compulsive disorder.^[2]

Example

An example of circumstantial speech is that when asked about the age of a person's mother at death, the speaker responds by talking at length about accidents and how too many people die in accidents, then eventually says what the mother's age was at death.^[1]

Similarly, a patient afflicted with this condition, for example, when asked about a certain recipe, could give minute details about going to the grocery store, the shopping experience, people there, and so on.

Treatment

Treatment often involves the use of behavioral modification and anticonvulsants, antidepressants and anxiolytics.^[5]

References

^ ^a ^b Problem-Based Psychiatry by Ben Green 2009 ISBN 1-84619-042-8 page 15
^ ^a ^b "Merck Source Library". Dorland's Medical Dictionary found on Merck Source's website. 2002–2009. Retrieved June 1, 2010.
^ Crash Course: Psychiatry by Julius Bourke, Matthew Castle, Alasdair D. Cameron 2008 ISBN 0-7234-3476-X page 255
^ "A definition of circumstantiality". Retrieved November 6, 2009.
^ Svobada, William (April 5, 2004). Childhood Epilepsy: Language, Learning And Behavioural Complications. Cambridge University Press. p. 672. ISBN 0-521-82338-2.

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