Warnings, focal seizures and terminology
In epilepsy, the word aura is often used for a brief, subjective experience that happens at the start of a focal seizure. An aura can be the entire seizure. It does not have to progress into a larger or more visible event.
Important distinction: an aura is not simply a feeling before a seizure. In epilepsy, it can itself represent seizure activity. For some people it remains brief and self-contained; for others it may evolve into another focal seizure or a focal to bilateral tonic-clonic seizure.
What can an aura feel like?
Focal seizures can produce a very wide range of experiences depending on the brain network involved. Examples include a rising sensation in the stomach, déjà vu, an unusual smell or taste, sudden fear or joy, tingling or numbness, visual changes, unusual bodily sensations, or a feeling that is difficult to describe.
These experiences are not identical in every person, and one person may have more than one seizure pattern. The description of the symptom, its timing and whether it is stereotyped from event to event can be clinically useful.
Aura does not mean a bigger seizure must follow
The word “warning” can be misleading because it sounds as though the aura is only a signal that the real seizure is about to begin. Sometimes a focal seizure does progress, but sometimes it does not. A focal seizure with preserved consciousness may be the whole event.
Aura versus prodrome
These terms describe different things. An aura is part of the seizure itself. A prodrome refers to symptoms that may occur before a seizure over a longer period and are not generally considered the ictal seizure event. Reported prodromal symptoms can include changes such as mood, anxiety, confusion or headache, but research on prediction is limited and these experiences are not specific to epilepsy.
Is there an official number of auras?
No. There is no authoritative ILAE list stating that epilepsy has exactly 15, 63 or any other fixed number of auras. The ILAE classifies seizures and uses semiological descriptors for what happens during them. Because focal seizure experiences can arise from different sensory, cognitive, emotional, autonomic and motor networks, they are not reduced to one fixed public list of “auras”.
The ILAE’s 2025 seizure classification contains 21 seizure types. That number should not be confused with a count of possible aura experiences.
Why terminology has changed
Older classifications used terms such as “simple partial seizure” and later “focal aware seizure”. In the 2025 ILAE classification, consciousness is assessed using both awareness and responsiveness, and seizure features are described in chronological sequence. In everyday conversation, many people and clinicians still use the word “aura” because it is familiar and useful.
When an aura is worth documenting
If an experience is recurrent and stereotyped, recording what happens, how long it lasts, what follows it and whether awareness or responsiveness changes can help clinical assessment. New, changing or unusual symptoms should be discussed with the treating team rather than assumed to be an aura.
Related focal epilepsy pages
Temporal Lobe Epilepsy · Frontal Lobe Epilepsy · Insular Epilepsy: The Great Mimic · Autonomic Seizures
Sources
International League Against Epilepsy — Updated seizure classification 2025
Epilepsy Society — Focal aware seizures (auras)
PubMed — Review of prodrome in epilepsy
Medical note: These are general educational explanations. A new or unusual sensory, emotional, cognitive or physical episode can have many causes and should not be self-diagnosed as epilepsy.