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Below are answers to frequently asked questions about epilepsy. More information can be found in our Publications & Resources section.
What is epilepsy?
How many people have epilepsy?
What should you do when someone is having a seizure?
What causes epilepsy?
How is epilepsy treated?
What is epilepsy?
Epilepsy is a chronic disorder of the brain that is characterized by recurrent seizures. The seizures are the result of sudden excessive electrical discharges in nerve cells in the brain. These discharges may affect the whole brain or just part of it.
Seizures can vary, including short lapses of attention, uncontrolled movements, odd sensations, loss of consciousness, or severe and prolonged convulsions. Seizures can also vary in frequency. In some people with epilepsy, seizures happen only occasionally; for others, it may happen up to hundreds of times a day.
Just because someone has one seizure does not necessarily mean that they have epilepsy. Epilepsy is defined by two or more unprovoked seizures.
More Information:
Epilepsy Fact Sheet
Seizure Types and First Aid
How many people have epilepsy?
Epilepsy is far more common that most people realize. About 40,000 people in BC and 300,000 people in Canada have epilepsy.
Anyone can develop epilepsy at any age. About 1 in 100 people will develop epilepsy in their lifetime.
Epilepsy is usually diagnosed in childhood or in the senior years. 1 in 12 people will have at least one seizure in their lifetime.
There are more than twice as many people with epilepsy in Canada as the number of people with cerebral palsy, muscular dystrophy, multiple sclerosis, and cystic fibrosis combined.
According to the World Health Organization, approximately 50 million people worldwide have epilepsy and, “epilepsy is the most common serious brain disorder worldwide with no age, racial, social class, national, nor geographic boundaries.”
What should you do when someone is having a seizure?
Knowing proper seizure first aid will greatly help someone having a seizure. It may even save their life. Here are things you can do:
1. Stay calm
2. Protect the person from injury
- cushion their head
- move hazardous objects away
- loosen anything tight around their neck
- remove their glasses
3. As soon as possible, gently turn the person onto their side
4. Stay with the individual until consciousness is fully regained
5. Be sensitive and supportive, and ask others to do the same
Never put anything in a person’s mouth during a seizure. Doing so may break their teeth or block their airway. A person cannot swallow their tongue during a seizure.
Do not restrain or hold the person down during a seizure.
An ambulance should be called if a seizure lasts for more than five minutes, for repeated seizures, for a first time seizure – no known history, or if a person is injured, pregnant, or has diabetes.
Many seizure types such as absence seizures or complex partial seizures that usually involve relatively brief episodes of unresponsiveness don’t require any specific first aid measures. Instead, stay with the person, move objects out of their way, guide them away from danger, and repeat any information they may have missed. After the seizure, talk gently to comfort and reassure the person.
More information:
First Aid Poster
Seizure Types and First Aid
What causes epilepsy?
In about 70% of cases, no known cause can be found. Among the rest, it may be any one of a number of things that can make a difference in the way the brain works, such as:
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injury to the brain before, during, or after birth
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infections that damage the brain (meningitis, encephalitis, etc.)
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disturbance in blood circulation to the brain (stroke and other vascular problems)
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brain tumors
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genetic or hereditary abnormalities
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malformation of the brain
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degenerative diseases
There is no cure for epilepsy. Treatments such as medications can control seizures in some people, but about 30% will still have seizures. This highlights the need for more epilepsy research for effective treatments and a cure.
How is epilepsy treated?
Epilepsy may be treated with medication, surgery, the ketogenic diet, and/or Vagus Nerve Stimulation. The goal of treatment is to stop or reduce the amount of seizures that an individual is having without causing unpleasant side effects.
Medication
Medication is the most common treatment, and is usually the first to be tried. There are over 30 different medications that are currently used in the treatment of epilepsy. Some people's seizures will respond well to a particular medication while someone else will still have seizures. Some people may also have to take multiple medications.
More information: Anti-Epileptic Medications Information Sheet
Surgery
Several types of brain surgery may be performed on patients whose seizures do not respond to medication. These may be used when the focus of the seizure can be determined and removal of all or part of the affected area of the brain can be performed without damage to vital functions. Because of new surgical techniques and new ways of identifying areas of the brain and their functions, more of these operations are being done now than ever before, and with greater success.
More information: Epilepsy Surgery Information Sheet
Vagus Nerve Stimulation
A Vagus Nerve Stimulator is a small pacemaker-like device that is implanted in the chest and attached to the vagus nerve in the neck. Short bursts of electrical energy are directed into the brain via the vagus nerve to help reduce the frequency and/or severity of seizures.
More information: Vagal Nerve Stimulation Information Sheet
Ketogenic Diet
The ketogenic diet is a rigid, strictly calculated, therapeutic diet used in the treatment of difficult-to-control epilepsy in children. This diet is very high in fats and very low in protein and carbohydrates. It is prescribed by a physician and carefully monitored by a dietician.
The ketogenic diet works by tricking the body into reacting as if it is starving or fasting: it causes the body to burn fats rather than carbohydrates. If there is very little carbohydrate in the diet, the liver converts fat into fatty acids and ketone bodies. The ketone bodies pass into the brain and replace glucose as an energy source. An elevated level of ketone bodies in the blood, a state known as ketosis, can lead to a reduction in the frequency of epileptic seizures.
More information: Ketogenic Diet Information Sheet
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