- A premonition. There is often an aura before a migraine or a grand mal seizure. The aura, a symptom of brain malfunction, may consist of flashing lights, a gleam of light, blurred vision, an odor, the feeling of a breeze, numbness, weakness, or difficulty speaking.
* * *1. Epileptic ictal phenomenon/phenomena perceived only by the patient. 2. Subjective symptoms at the onset of a migraine headache. [L. breeze, odor, gleam of light]- abdominal a. epileptic a. characterized by abdominal discomfort, including nausea, malaise, pain, and hunger; some phenomena reflect ictal autonomic dysfunction. SEE ALSO: a. (1).- auditory a. epileptic a. characterized by illusions or hallucinations of sounds. SEE ALSO: a. (1).- experiential a. epileptic a. characterized by altered perception of one's internal and/or external environment; may involve auditory, visual, olfactory, gustatory, somatosensory, or emotional altered perceptions. When one of the altered perceptions is clearly predominant, the specific a. classification should be used. SEE ALSO: a. (1).- gustatory a. epileptic a. characterized by illusions or hallucinations of taste. SEE ALSO: a. (1).- intellectual a. a dreamy, detached, or reminiscent a.. SYN: reminiscent a..- olfactory a. epileptic a. characterized by illusions or hallucinations of smell. SEE ALSO: a. (1).- reminiscent a. SYN: intellectual a..- somatosensory a. epileptic a. characterized by paresthesias or abdominal somatognosia of a clearly defined regional distribution. SEE ALSO: a. (1).- visual a. epileptic a. characterized by visual illusions or hallucinations, formed or unformed, including scintillations, teichopsia. SEE ALSO: a. (1).
* * *au·ra 'ȯr-ə n, pl auras also au·rae -ē a subjective sensation (as of voices or colored lights or crawling and numbness) experienced before an attack of some nervous disorders (as epilepsy or migraine)
* * *n.the forewarning of an epileptic or migrainous attack. An epileptic aura may take many forms, such as an odd smell or taste. The migrainous aura may affect the patient's eyesight with brilliant flickering lights or blurring of vision, but it may also result in pins and needles or weakness of the limbs.
* * *au·ra (awґrə) pl. auras or auґrae [L. â€œbreathâ€] a subjective sensation or motor phenomenon that precedes and marks the onset of an episode of a neurological condition, particularly an epileptic seizure (epileptic a.) or a migraine (migraine a.). Cf. prodrome.
Medical dictionary. 2011.