October 23, 2016 is
SUDEP Awareness Day. The acronym SUDEP stands for
Sudden Unexpected Death in Epilepsy. The Epilepsy Foundation site has an informative page about SUDEP which is set out below before the Epilepsy Facts page of Epilepsy Canada. Persons with autism and their famiilies should be aware of epilepsy and the possible risks of SUDEP. The information below from
Epilepsy Canada indicates that approximately
0.6% of the Canadian population has epilepsy. B y comparison Autism Speaks on its Autism and Epilepsy Resources page estimates that as many as 33% of persons with autism also suffer from epilepsy an extraordinary difference from the general population.
It is estimated that as many as 1/3 of individuals with autism spectrum disorder also have epilepsy. Epilepsy is a brain disorder marked by recurring seizures, or convulsions.
Experts propose that some of the brain abnormalities that are associated with autism may contribute to seizures. These abnormalities can cause changes in brain activity by disrupting neurons in the brain. Neurons are cells that process and transmit information and send signals to the rest of the body. So overloads or disturbances in the activity of these neurons can result in imbalances that cause seizures.
To learn more about how to recognize and treat epilepsy, visit the Treatments section of our What is Autism page.
Recognizing Epilepsy Symptoms
Seizures can begin at any age. Characteristic symptoms include:
- Unexplained staring spells
- Stiffening of muscles
- Involuntary jerking of limbs
- Facial twitching
- Unexplained confusion
- Severe headaches
Other less-specific symptoms can include:
- Sleepiness or sleep disturbances
- Marked and unexplained irritability or aggressiveness
- Regression in normal development
Types of Seizures
Like autism, epilepsy exists on a spectrum. Severity varies widely among people with epilepsy. There are several types of seizures, each with somewhat different symptoms:
- Tonic-clonic seizures are the most common. Also known as gran mal seizures, they produce muscle stiffening followed by jerking. Gran mal seizures also produce loss of consciousness.
- Absence seizures can be difficult to recognize. Also known aspetit mal seizures, they are marked by periods of unresponsiveness. The person may stare into space. He or she may or may not exhibit jerking or twitching.
- Tonic seizures involve muscle stiffening alone.
- Clonic seizures involve repeated jerking movements on both sides of the body.
- Myoclonic seizures involve jerking or twitching of the upper body, arms or legs.
- Atonic seizures involve sudden limpness, or loss of muscle tone. The person may fall or drop his or her head involuntarily.
SUDEP: Sudden Unexpected Death in Epilepsy
We know that the combination of autism and epilepsy is often associated with overall poor health, and in extreme circumstances, premature death. Though most neurologists and physicians choose to ignore this frightening topic, it is important to know that in rare occasions, epilepsy can be fatal. The incidence of Sudden Unexpected Death in Epilepsy (SUDEP) ranges in different studies from 0.9 – 93 cases per 10,000 people per year (Tomson et al. 2008).
SUDEP is more likely in people with uncontrolled grand mal seizures, or those who are having seizures but not taking adequate doses of antiepileptic medications. Causes include pauses in breathing, heart rhythm problems, brain dysfunction, or a mix of these. Click here to learn more information about SUDEP from epilepsy.com.
There are various strategies to help prevent SUDEP. Obviously, controlling seizures as much as possible is the best option. Finding the right medicines and ensuring that your loved one takes the proper dosage at the proper time is critical. There are lots of researchers and companies currently working on seizure monitors to notify caretakers when a seizure is beginning. There are currently some seizure monitors that families have found helpful as the monitors are able to alert them when a seizure is occuring or about to occur. A few bed monitors are listed in the resources below.
How common is SUDEP?
People with epilepsy die prematurely at a higher rate compared to the general population.The most common cause of death from epilepsy is sudden unexpected death in epilepsy, known as SUDEP.
There are at least 2,750 cases of SUDEP each year — meaning that almost 1 in 1,000 adults with epilepsy will die as a result of SUDEP every year. For those adults with uncontrolled seizures, the risk increases to 1 in 150.
When is SUDEP likely to occur?
Reducing the Risk of SUDEP
Experts agree it is imperative to reduce the number of generalized tonic-clonic seizures experienced by people with epilepsy.
Having a generalized tonic-clonic seizure increases the risk of SUDEP for a person with epilepsy. This singular fact makes an indisputable case for urgently addressing seizure control.
Uncontrolled seizures can pose a deadly threat for people with epilepsy.
Understanding and Preventing Risk Behaviors
There are a number of situations or behaviors that can increase the risk or likelihood of seizures. To help people with epilepsy reduce risk of seizures and SUDEP, experts have identified four actionable behaviors. This essential "to-do list" includes:
- Take medication as prescribed
- Get enough sleep
- Limit alcohol
- Strive to stop seizures
Did you know?
- Epilepsy is a physical condition characterized by sudden, brief changes in how the brain works. It is a symptom of a neurological disorder - a disorder that affects the brain and shows itself in the form of seizures.
- Epilepsy is a disorder, not a disease; it is not contagious.
- Approximately 0.6% of the Canadian population has epilepsy. This includes those who take anticonvulsant drugs or who had a seizure within the past 5 years.
- Due to the stigma surrounding epilepsy and the prejudice with which society has historically treated people with epilepsy, many with the disorder are reluctant to admit it or to seek treatment. Thus the prevalence of epilepsy is likely much higher.
- Each day in Canada, an average of 42 people learn that they have epilepsy. Each year an average of 15,500 people learn they have epilepsy; 44% are diagnosed before the age of 5, 55% before the age of 10, 75-85% before age 18 and 1% of children will have recurrent seizures before age 14. 1.3% are over the age of 60. This means that about 60% of new patients are young children and senior citizens.
- In approximately 50% of cases of childhood epilepsy, seizures disappear completely.
- In 50 - 60% of cases, the cause of epilepsy is unknown. In the remainder, the following causes are most common: brain tumour and stroke, head trauma of any type. The more severe the injury, the greater the chance of developing epilepsy. Injury, infection, or systemic illness of the mother during pregnancy, brain injury to the infant during delivery may lead to epilepsy and aftermath of infection (meningitis, viral encephalitis)* poisoning, from substance abuse of alcoholism
- Events that may trigger seizures include: stress, poor nutrition, flickering lights, skipping meals, illness, fever and allergies, lack of sleep, emotions such as anger, worry, fear and others, heat and/or humidity.
- The major form of treatment is long-term drug therapy. Drugs are not a cure and can have numerous, sometimes severe, side effects.
- Brain surgery is recommended only when medication fails and when the seizures are confined to one area of the brain where brain tissue can be safely removed without damaging personality or function.
