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Epilepsy: signs, diagnosis & outlook

Can You Develop Epilepsy Later in Life?

Last updated 31 October 2026 · 8 min read · By Sarah M., Support Coordinator
In short

Yes, you can develop epilepsy later in life. Epilepsy Action Australia says seizures can begin at any age, and that epilepsy is most frequently diagnosed in childhood and in people over 65. This guide covers adult symptoms, causes, assessment and support, and builds on our guide to the symptoms of epilepsy.

Key points

  • Epilepsy can start at any age, and Epilepsy Action Australia says it is most frequently diagnosed in childhood and in people over 65.
  • Epilepsy Action Australia states epilepsy is the fourth most common neurological condition, after migraine, stroke and dementia.
  • In about half of people diagnosed, the cause is never known, so not finding a cause is common.
  • Only a doctor can diagnose epilepsy; if you notice possible seizures, see your GP, write down what happened, and call 000 in an emergency.
Can you develop epilepsy later in life: at a glance
Can it start in adulthood?Yes. Seizures can begin at any age (Epilepsy Action Australia)
When is it most often diagnosed?In childhood and in people over 65 years of age
How commonThe fourth most common neurological condition, after migraine, stroke and dementia
Where to startYour GP, who can explain the next steps, including whether you need a specialist
NDIS relevanceIf you meet the NDIS access requirements, the NDIS may fund supports linked to your disability

Can you develop epilepsy later in life?

Yes. Late onset epilepsy, also called adult onset epilepsy, means epilepsy that starts in adulthood.

  • Any age: Epilepsy Action Australia states that seizures can begin at any age (Epilepsy Action Australia).
  • Peak ages: epilepsy is most frequently diagnosed in childhood and in people over 65 years of age.
  • Common condition: it is the fourth most common neurological condition, after migraine, stroke and dementia.
  • Different from a single seizure: a seizure and epilepsy are not the same thing; see seizure vs epilepsy.
  • Children and adults: if you are looking for information on younger people, see childhood epilepsy.

Can epilepsy start later in life: what can cause it?

Epilepsy Action Australia lists several causes, and in many cases none is found (What is epilepsy).

  • Head injury: a past injury to the head is listed as a cause.
  • Stroke or brain haemorrhage: both are on the list.
  • Lack of oxygen to the brain: this is another listed cause.
  • Brain infections and brain tumours: both appear in the list of causes.
  • Brain abnormalities present at birth, and genetic factors: these are also listed.
  • Unknown: in about half of people diagnosed, the cause is never known.

For more detail, read what can cause epilepsy. Your specialist is the right person to discuss what may apply to you.

Epilepsy symptoms in adults: signs to notice

Seizures can look different from person to person, so write down what you or others notice.

What to noteWhy it helps
What happened before, during and afterGives your doctor a clear picture of the event
How long it lastedAdds detail your doctor may ask about
Where you were and what you were doingGives your doctor context about the event
What a witness sawYou may not remember the event yourself
Any video taken safely by a bystanderCan show your doctor what happened, if it can be recorded without delaying help

Signs of epilepsy in adults, including early or mild symptoms, are not always obvious. Only a doctor can tell whether an event was a seizure, so see your GP rather than waiting.

Looking for NDIS support at home?

TQN Care support workers help with personal care, community access, respite and help around the home across Sydney, Melbourne and surrounding areas (NSW & VIC). Tell us what you need and we will call you back.

Make a referral →

How adult epilepsy is assessed in Australia

Assessment is led by doctors, and the usual starting point is your GP. Read more in how epilepsy is diagnosed.

  1. See your GP. Describe the event and bring your notes, and ask a family member or friend who saw it to come along.
  2. Ask about a referral. Ask your GP whether you need to see a specialist, such as a neurologist, for further assessment.
  3. Follow your doctor’s advice. Ask which tests they recommend and what they involve.
  4. Ask about safety. Ask your doctor about driving, work, swimming and bathing, since advice depends on your situation.
  5. Keep a record. Note any further events, so your specialist can review them.

Treatment for epilepsy in adults

Treatment is decided by your doctor, and this guide cannot recommend any treatment.

  • Specialist care: a specialist explains the options that suit your type of epilepsy and your health.
  • Medicines: never start, stop or change a medicine without talking to your doctor or pharmacist.
  • Regular reviews: ask how often you should be seen and what to do if events change.
  • Seizure management plan: ask your doctor for a written plan, and keep a copy where family, friends and support workers can find it.
  • Questions: write down questions before each appointment so you leave with clear answers.

If you develop epilepsy later in life: home, work and community

Living with adult epilepsy can involve planning for safety at home, at work and in the community.

  • Tell the people around you: share your plan with family, flatmates, colleagues and support workers, if you are comfortable.
  • If someone has a seizure: follow the person’s own seizure management plan and call 000 in an emergency.
  • Daily routines: ask your doctor what safety steps suit your home, work and activities.
  • Support workers: can help with daily tasks and community access, including when you have more complex needs; see high intensity supports.
  • Health conditions together: epilepsy can occur with other conditions; see migraine and epilepsy.
  • Risks: talk to your specialist about risks, including sudden unexpected death in epilepsy (SUDEP), and what can reduce them.

Can you develop epilepsy later in life and get NDIS support?

NDIS support depends on whether you meet the NDIS access requirements, so check the official guidance and talk to your doctors about evidence.

When to talk to a GP or specialist

See a doctor promptly if anything on this list applies, and call 000 in an emergency.

  • You have had an event you think may have been a seizure, even if it was brief and you felt fine afterwards.
  • Someone has told you that you lost awareness, behaved oddly or moved unusually and you do not remember it.
  • You have a known condition and your events are changing in how often they occur, how long they last or what they look like.
  • You are worried about safety at home, at work, when driving or when caring for others.
  • You need a letter or report for the NDIS, your employer or a support service.
Looking for NDIS support at home?

TQN Care support workers help with personal care, community access, respite and help around the home across Sydney, Melbourne and surrounding areas (NSW & VIC). Tell us what you need and we will call you back.

Make a referral →

Your next step

If you or someone you care for lives with epilepsy and needs practical support, TQN Care can help. Our support workers assist with personal care, community access and help around the home, including higher-care needs, across Sydney, Melbourne and surrounding areas (NSW & VIC). See our high-care and complex support page or make a referral and we will call you back.

SM
Sarah M., Support CoordinatorTQN Care is a registered NDIS provider supporting people across Sydney, Melbourne and surrounding areas (NSW & VIC).
Common questions

FAQs about epilepsy in adults

Can you get epilepsy later in life? +

Yes. Epilepsy Action Australia states that seizures can begin at any age, and that epilepsy is most frequently diagnosed in childhood and in people over 65. If you are worried, see your GP and write down what happened.

Can epilepsy start later in life without a cause? +

Yes. Epilepsy Action Australia says that in about half of people diagnosed, the cause is never known. Listed causes include head injury, stroke, brain infections and brain tumours. Your specialist can discuss what may apply to you.

What are early signs of epilepsy in adults? +

Seizures can look very different between people, and only a doctor can say whether an event was a seizure. Write down what happened, how long it lasted and what a witness saw, then see your GP. Call 000 in an emergency.

What is the treatment for epilepsy in adults? +

Treatment is decided by your doctor or specialist based on your type of epilepsy and your health. Never start, stop or change a medicine without medical advice, and ask for a written seizure management plan.

References

Sources

  1. Epilepsy facts and statistics — Epilepsy Action Australia
  2. What is epilepsy — Epilepsy Action Australia
  3. Epilepsy Foundation — Epilepsy Foundation
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