Panic symptoms and focal seizures can overlap. Sudden fear, a racing heart, breathlessness, sweating, derealisation, nausea, chest sensations and a sense that something terrible is about to happen can occur in panic attacks, but some of the same symptoms can also occur during focal seizures.
This page is about the differential diagnosis. It does not imply that panic is “just psychological” or that fear automatically means epilepsy.
Why the overlap happens
Focal seizures involving temporal and limbic networks can produce abrupt fear, autonomic sensations, altered familiarity, déjà vu, rising epigastric sensations or changes in awareness. Panic attacks can also produce powerful autonomic and perceptual symptoms.
Duration can help, but it is not absolute
Focal seizures are often brief, commonly lasting seconds to a few minutes. Panic attacks often build and persist for longer, but short panic episodes and longer focal seizures do occur. Duration is therefore a clue rather than a diagnostic rule.
Stereotypy matters
Epileptic events are often highly stereotyped: the same sequence of sensations and behaviours may recur in a very similar order. Panic symptoms can also recur in a recognisable pattern, so stereotypy alone is not definitive.
Awareness and memory
Some focal seizures preserve awareness; others impair it. A person may become unable to respond normally, develop automatisms or have a memory gap. Panic attacks usually preserve awareness of the event, even when the person feels detached or overwhelmed.
Triggers are not a simple separator
Panic attacks may be situational or unexpected. Seizures can also occur during stress, sleep deprivation or emotional arousal. The presence of stress does not prove an event is non-epileptic.
EEG has limitations
A normal routine EEG does not rule out focal epilepsy. Conversely, an abnormal interictal EEG does not prove that every episode of fear is a seizure. Capturing a typical event with video-EEG can be important when the diagnosis remains unclear.
Both conditions can coexist
People with epilepsy can also have panic disorder, and people with panic disorder can have unrelated neurological symptoms. A previous diagnosis should not automatically explain every new event.
Details worth recording
- how suddenly the episode begins and ends;
- exact duration;
- whether the sequence is identical each time;
- déjà vu, unusual smells or tastes, rising abdominal sensations or automatisms;
- whether speech or responsiveness changes;
- whether there is amnesia afterwards;
- how long recovery takes;
- whether episodes arise from sleep.
Related reading
Sources and further reading
- Panic versus epilepsy: a challenging differential diagnosis. Clin EEG Neurosci. 2013. PMID: 23585641.
- Focal epilepsies: Update on diagnosis and classification. 2023. PMID: 36938903.
Evidence checked: September 2026.