| autochthonous ideas | Thoughts that suddenly burst into awareness as if they are vitally important, often as if they have come from an outside source. (05 Mar 2000) |
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| flight of ideas | An uncontrollable symptom of the manic phase of a bipolar depressive disorder in which streams of unrelated words and ideas occur to the patient at a rate that is impossible to vocalise despite a marked increase in the individual's overall output of words. See: mania. (05 Mar 2000) |