a. [f. prec. + -AL.] Characterized by (mental) confusion: in confusional insanity (see quot.).
1887. Syd. Soc. Lex., Insanity, primary confusional, the form in which there is a rapidly developed not excessive fever, with confusion of thoughts, incoherence, slight delirium, and hallucinations, but no melancholia or dementia.
