Reviewed personally by Dr. Sunkara · Written for Epilepsy · Updated September 2026
Quick Answer
Epilepsy is a brain condition that causes recurring, unprovoked seizures, sudden bursts of abnormal electrical activity that disrupt normal brain function. Doctors usually diagnose it after two seizures more than 24 hours apart, or one seizure with a high risk of another. Seizures range from brief staring spells to full convulsions.
Inside a healthy brain, neurons fire in organised patterns, passing signals down predictable pathways. In this condition, a cluster of neurons misfires all at once, sending a burst of activity that overwhelms the surrounding circuitry. What happens next depends entirely on where in the brain that burst begins, which is why one person's seizure can look completely different from another's. Some stay contained to a small area and barely show on the outside. Others spread and take over consciousness entirely.
Epilepsy in adults often follows a head injury, a stroke, or an infection, though in many cases doctors never pin down an exact cause. Here's the thing: not every problem needs a surgery. Most people manage it well with medication alone.
Your EEG report or your doctor's notes will usually name one of these categories. Knowing which type you're dealing with shapes everything from medication choice to whether surgery ever becomes a conversation worth having.
A single seizure that resolves on its own within a minute or two, in someone already diagnosed, usually doesn't need an ER visit. What matters far more than how dramatic a seizure looks is how long it lasts and whether the person recovers normally afterward.
Seek Immediate Care If You Also Have:
01
Dr. Sunkara starts with a detailed account of what the seizure looked like, ideally from someone who witnessed it, along with a full neurological exam to rule out other causes of the episode.
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An electroencephalogram records the brain's electrical activity through painless scalp electrodes over minutes or hours, and it's the test that most reliably captures the abnormal patterns behind a diagnosis.
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An MRI scan looks for a structural cause behind the seizures, such as scarring, a tumour, or a malformation, information that shapes which treatment path makes sense.
Most people with the condition do well on medication alone. Treating the underlying cause, like a brain tumour, can sometimes resolve the seizures completely. For structural causes such as scarring or temporal lobe epilepsy, surgery only enters the conversation once several medications have been tried and haven't controlled the seizures.
The first-line treatment for almost everyone newly diagnosed, chosen and dosed based on seizure type and any other health conditions.
A structured reassessment of drug choice, dose, and timing when seizures continue despite treatment, often the step that finally gets control right.
A small device, placed under the chest skin in a short operation, sends regular pulses to the vagus nerve when seizures continue and brain surgery isn't an option.
Removes or disconnects the seizure-causing area of the brain, reserved for drug-resistant epilepsy once imaging and EEG pinpoint a clear source.
See Epilepsy Surgery →It usually isn't cured in the sense of disappearing for good, but for most people it becomes well-controlled enough that seizures stop interfering with daily life. Some children outgrow specific epilepsy syndromes entirely as their brain develops. That distinction, control versus cure, matters more than the word itself might suggest.
These are the everyday factors most likely to bring a seizure on.
SLEEP
Missing a full night's sleep is one of the most reliably reported seizure triggers, so a consistent sleep schedule genuinely helps.
STRESS
Emotional stress doesn't cause epilepsy, but it lowers the seizure threshold for many people, making an existing tendency easier to trigger.
MISSED DOSES
Skipping or delaying anti-seizure medication is one of the most common reasons a well-controlled pattern suddenly breaks.
ALCOHOL
Heavy drinking, and especially the withdrawal period after it, can trigger seizures even in people who don't otherwise have frequent episodes.
Which type of epilepsy does my EEG report show?
Is my epilepsy likely to respond well to medication alone?
What triggers should I personally watch for and avoid?
At what point would surgery become worth considering for me?
How often will I need follow-up EEGs or imaging done?
A second opinion on your EEG and imaging can confirm whether medication still has more to offer before surgery is considered.
Epilepsy is a brain condition that causes recurring, unprovoked seizures caused by abnormal electrical activity. It's diagnosed after two unprovoked seizures, or one seizure with a high chance of recurrence.
Book a consultation with Dr. Sunkara to talk through your EEG and treatment plan, or start with a second opinion if surgery has already been raised.
Written & reviewed by Dr. Raveesh Sunkara, Senior Consultant Neurosurgeon & Spine Surgeon · Last updated September 2026 · Next review due March 2027