Aura (symptom)


Aura (symptom)
Migraine with aura (classical migraine)
Classification and external resources
ICD-10 G43.1
ICD-9 346.0
Artist's depiction of zig-zag lines appearing as part of a migraine aura phenomenon
Artist's depiction of scintillating scotoma

An aura is the perceptual disturbance experienced by some migraine sufferers before a migraine headache, and the telltale sensation experienced by some people with epilepsy before a seizure. It often manifests as the perception of a strange light, an unpleasant smell or confusing thoughts or experiences. Some people experience aura without a subsequent migraine or seizure (see silent migraine).

When occurring, auras allow epileptics time to prevent injury to themselves and/or others. The time between the appearance of the aura and the migraine lasts from a few seconds up to an hour. The aura can stay with a migraine sufferer for the duration of the migraine, depending on the type of aura this can leave the person disoriented and confused. It is not uncommon for migraine sufferers to experience more than one type of aura during the migraine. Most people who have auras have the same type of aura every time.

Auras can also be confused with sudden onset of panic, panic attacks or anxiety attacks creating difficulties in diagnosis. The differential diagnosis of patients who experience symptoms of paresthesias, derealization, dizziness, chest pain, tremors, and palpitations can be quite challenging.[1]

Contents

Examples

An aura sensation can include some or a combination of the following:

Visual changes

  • Bright lights and blobs
  • Zigzag lines
  • Distortions in the size or shape of objects
  • Vibrating visual field
  • Scintillating scotoma
  • Scotoma
    • Blind or dark spots in the field of vision
    • Curtain-like effect over one eye
    • Slowly spreading spots
  • Kaleidoscope effects on visual field
  • Total temporary monocular (in one eye) blindness (in retinal migraine)[2]
  • Heightened sensitivity to light

Auditory changes

  • Hearing voices or sounds that do not exist: true auditory hallucinations
  • Modification of voices or sounds in the environment: buzzing, tremolo, amplitude modulation or other modulations
  • Heightened sensitivity to hearing
  • Someone speaking at a level and normal tone sounds like they are shouting loudly

Other sensations

  • Strange smells (Phantosmia) or tastes (Gustatory hallucinations), or where food and drinks taste different than usual
  • Heightened sensitivity to smell
  • Feelings of déjà vu or confusion
  • Feelings of numbness or tingling on one side of the face or body
  • Feeling separated from one's body
  • Feeling as if the limbs are moving independently from the body
  • Feeling as if one or multiple limbs are growing
  • Feeling as if the mouth is too small for the teeth inside
  • Feeling as if one has to eat or go to the bathroom
  • Feeling as if one is going to vomit
  • Anxiety or fear
  • Weakness, unsteadiness
  • Saliva collecting in the mouth
  • Being unable to understand or comprehend spoken words during and after the aura
  • Being unable to speak properly, such as slurred speech or gibberish, despite the brain grasping what the person is trying to verbalize (aphasia)
  • Temporary amnesia, such as forgetting how to do tasks you have been doing for years

Uses

The specific type of sensation associated with an aura can potentially be used in an attempt to localize the focus of a seizure.

Auras share similar symptoms with strokes, but onset is more gradual with auras.[3] Auras can last from several seconds to as long as an hour, and can sometimes end with feelings of extreme tiredness, weakness, heart palpitation, sweating and warmth throughout one's body.

The onset of an aura can provide an early warning for those experiencing migraines.

See also

References

  1. ^ Sudden Onset Panic: Epileptic Aura or Panic Disorder? Robin A. Hurley, M.D., Ronald Fisher, M.D., Ph.D. and Katherine H. Taber, Ph.D.
  2. ^ Robert, Teri. "Living Well With Migraine Disease and Headaches" New York HarperCollins 2004
  3. ^ Better Health Channel. Stroke and Migraine. Government of Victoria, Australia. Accessed August 18, 2007.

External links


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Look at other dictionaries:

  • Aura — may refer to:In science and medicine: *Aura (symptom), a symptom experienced before a migraine or seizure *Aura (optics), an optical phenomenon *Aura (paranormal), a field of luminous multicolored radiation around a person or object *Aura… …   Wikipedia

  • Aura (paranormal) — In parapsychology and many forms of spiritual practice an aura is a field of subtle, luminous radiation surrounding a person or object like the halo or aureola of religious art. [http://parapsych.org/glossary a d.html Parapsychological… …   Wikipedia

  • Aura — Au ra, n.; pl. {Aur[ae]}. [L. aura air, akin to Gr. ?.] 1. Any subtile, invisible emanation, effluvium, or exhalation from a substance, as the aroma of flowers, the odor of the blood, a supposed fertilizing emanation from the pollen of flowers,… …   The Collaborative International Dictionary of English

  • aura —    Also known as aural phenomenon and psychical state. The term aura is Greek for wind, breeze, or smell. Its introduction into medicine has been attributed to the Greek physician Pelops, the master of the great Galen of Pergamum (129 c. 216 AD) …   Dictionary of Hallucinations

  • Aura (Migräne) — Klassifikation nach ICD 10 G43.1 Migräne mit Aura (Klassische Migräne) G43.3 Komplizierte Migräne G43.8 …   Deutsch Wikipedia

  • Aura — 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… …   Medical dictionary

  • aura — n. (pl. aurae or auras) 1 the distinctive atmosphere diffused by or attending a person, place, etc. 2 (in mystic or spiritualistic use) a supposed subtle emanation, visible as a sphere of white or coloured light, surrounding the body of a living… …   Useful english dictionary

  • visual aura —    Formerly known as suffusio. The term visual aura is indebted to the Greek noun aura, which means wind, breeze, or smell. It is used to denote an *aura experienced in the visual modality. The earliest known written account of a visual aura… …   Dictionary of Hallucinations

  • somaesthetic aura —    Also written as somesthetic aura. Both terms are indebted to the Greek words soma (body), aisthanesthai (to notice, to perceive), and aura (wind, smell). They are used as synonyms for the term * somatosensory aura.    References    Podoll, K …   Dictionary of Hallucinations

  • Electric aura — Aura Au ra, n.; pl. {Aur[ae]}. [L. aura air, akin to Gr. ?.] 1. Any subtile, invisible emanation, effluvium, or exhalation from a substance, as the aroma of flowers, the odor of the blood, a supposed fertilizing emanation from the pollen of… …   The Collaborative International Dictionary of English


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