Understanding Breakthrough Seizures: Causes, Symptoms, and Prevention

What is a Breakthrough Seizure? A breakthrough seizure is a new seizure episode that occurs after a person with epilepsy has been seizure-free for at least 12 months. Epilepsy is a neurological disorder characterized by recurrent seizures. While effective treatments can help many individuals achieve remission (being seizure-free), breakthrough seizures can happen, causing concern and disruption. It is estimated that about 1 in 3 people with epilepsy experience these seizures at some point. The good news is that even after a breakthrough seizure, most individuals can achieve remission again with appropriate medical management. The World Health Organization suggests that with proper treatment, up to 70% of people with epilepsy can achieve remission. However, sometimes, even after a period of successful seizure control, a new seizure may occur. This is specifically defined as a breakthrough seizure if the individual has been seizure-free for a minimum of 12 months prior to this new episode. Research indicates the prevalence of breakthrough seizures. A 2019 study found that 34% of participants experienced a breakthrough seizure. Earlier research from 2007 also reported a similar figure, with about 37% of people with epilepsy having breakthrough seizures. Importantly, for those who experience a breakthrough seizure, many can return to a seizure-free state. In the 2019 study, 62% of individuals who had a breakthrough seizure achieved another 12-month period of remission within two years following the event. How to Recognize a Breakthrough Seizure The symptoms of any seizure can vary significantly from person to person and depend on the type of seizure. While the stereotypical image of a seizure involves falling and shaking (tonic-clonic seizures), many seizures present with much subtler signs. These can include: Unusual sensory perceptions, such as smelling or tasting something that isn't there. Unexplained emotional changes. Repetitive body movements, like rubbing hands together or fiddling with objects. A brief period of confusion or staring blankly. For tonic-clonic seizures, the more commonly depicted type, symptoms can include: Sudden loss of consciousness. Stiffening of the body (tonic phase). Rhythmic jerking movements of the limbs (clonic phase). Loss of bladder or bowel control. Difficulty breathing during the seizure. If you have epilepsy and suspect you may have experienced a breakthrough seizure, it is crucial to contact your doctor. They can help determine if the event was indeed a breakthrough seizure and discuss any necessary adjustments to your treatment plan. What Causes Breakthrough Seizures? The underlying causes of breakthrough seizures are generally the same as those for other epileptic seizures. However, the most frequent trigger for a breakthrough seizure is missing medication . Adherence to prescribed medication schedules is paramount in managing epilepsy. Several factors can trigger seizures in individuals with epilepsy, and these triggers can be highly personal. They may also depend on the specific type of epilepsy and seizures a person experiences. Some common triggers include: Medication non-adherence: Forgetting to take anti-epileptic drugs (AEDs) or not taking them consistently. Alcohol: Both excessive alcohol consumption and alcohol withdrawal can trigger seizures. Hormonal changes: Fluctuations in hormone levels, particularly during menstruation in women, can sometimes trigger seizures. Stress: Significant emotional or physical stress can be a trigger for some individuals. Sleep deprivation: Lack of adequate sleep can lower the seizure threshold. Illness or fever: Being unwell, especially with a fever, can increase seizure risk. Sensory stimuli: For some, specific visual stimuli like flashing lights (photosensitive epilepsy) or strong smells can trigger seizures. Other medical conditions: Certain health issues can also influence seizure activity. Diagnosis of Breakthrough Seizures A diagnosis of epilepsy is typically made by a neurologist when a person has experienced two or more unprovoked seizures. If you have epilepsy and experience a seizure after being seizure-free for over a year, your doctor will evaluate the situation to confirm if it is a breakthrough seizure. This usually involves: Detailed medical history: Your doctor will ask about the seizure event, including what happened before, during, and after, as well as your adherence to medication and any potential triggers. Neurological examination: To assess your overall neurological function. Review of treatment plan: Assessing the effectiveness of your current anti-epileptic drugs (AEDs). Possible further tests: In some cases, an Electroencephalogram (EEG) or brain imaging (MRI) might be recommended to rule out other causes or to get more information about brain activity. Treatment for Breakthrough Seizures The primary goal of epilepsy management is to achieve and maintain seizure control. If a breakthrough seizure occurs, the treatment approach often focuses on identifying and managing the underlying cause or trigger. The main treatment for epilepsy remains anti-epileptic medications. If you experience a breakthrough seizure, your doctor will discuss your current treatment plan. Several approaches might be considered: Medication adjustment: This could involve increasing the dosage of your current medication, switching to a different AED, or adding a new medication to your regimen. In many cases, 66% of individuals who achieved remission after a breakthrough seizure in one study made no changes to their initial treatment plan, suggesting that sometimes, the breakthrough is an isolated event. Addressing triggers: If a specific trigger is identified (e.g., stress, sleep deprivation), strategies to manage or avoid that trigger will be recommended. Lifestyle modifications: Ensuring consistent sleep, managing stress, and maintaining a healthy diet can play a supportive role. Dietary therapies: In some cases, ketogenic diets or modified Atkins diets may be considered, especially for difficult-to-treat epilepsy. Surgery: For individuals whose seizures are not well-controlled by medication, epilepsy surgery might be an option to remove the part of the brain where seizures originate. It's important to note that for those who did not achieve remission within two years after a breakthrough seizure, further investigation into their treatment plan and potential underlying factors is crucial. When to Seek Emergency Medical Attention While not all seizures require emergency intervention, certain situations warrant immediate medical attention. Call 911 or your local emergency services if: The seizure lasts for 5 minutes or longer. The person has trouble breathing or cannot be roused after the seizure. Multiple seizures occur in a short period without full recovery in between. The person has an additional serious health concern, such as pregnancy or a known heart condition. The seizure occurs while the person is in water (e.g., swimming or bathing), due to the risk of drowning. The person sustains an injury during the seizure. Can Breakthrough Seizures Be Prevented? Preventing breakthrough seizures largely involves the same strategies used to prevent any seizure in epilepsy. The most effective method is strict adherence to your prescribed medication regimen . Taking your anti-epileptic drugs exactly as prescribed by your doctor, at the same times each day, is critical. Other preventive measures include: Identifying and avoiding triggers: Keep a seizure diary to track potential triggers like stress, lack of sleep, certain foods, or environmental factors. Once identified, make efforts to avoid or manage these triggers. Maintaining a healthy lifestyle: Ensure adequate sleep, manage stress through relaxation techniques, and maintain a balanced diet. Limiting alcohol consumption: If you drink alcohol, do so in moderation and be aware of its potential impact on your seizure control. Avoid alcohol if advised by your doctor. Regular medical follow-ups: Attend all scheduled appointments with your neurologist to monitor your condition and treatment effectiveness. Living with Epilepsy After a Breakthrough Seizure Experiencing a breakthrough seizure can be unsettling, but it does not mean that epilepsy is no longer manageable. With the right medical guidance and adherence to treatment, most individuals can regain seizure control and continue to live fulfilling lives. Open communication with your healthcare provider is key to navigating these challenges effectively. Frequently Asked Questions (FAQ) What is the difference between a regular seizure and a breakthrough seizure? The primary difference lies in the timing. A breakthrough seizure is a new seizure event that occurs after a person has been seizure-free for at least 12 consecutive months. A regular seizure, in the context of epilepsy diagnosis, is any seizure that occurs as part of the condition, especially if the person has not achieved a prolonged period of remission. Can a breakthrough seizure happen even if I take my medication perfectly? Yes, it is possible. While medication adherence is the most crucial factor in preventing seizures, other factors like illness, extreme stress, hormonal changes, or even unknown triggers can sometimes lead to a breakthrough seizure, even in individuals who are diligent with their medication. How long does it take to recover from a breakthrough seizure? Recovery time varies. Some individuals may experience only one breakthrough seizure and return to remission quickly. Others might take longer to regain seizure control. The key is to work closely with your doctor to adjust your treatment plan if necessary and manage any contributing factors. Are breakthrough seizures a sign that my epilepsy is getting worse? Not necessarily. While it's a cause for concern and requires medical evaluation, a breakthrough seizure doesn't automatically mean your epilepsy is worsening. It often indicates a need to re-evaluate your treatment, triggers, or other lifestyle factors. Many people successfully return to remission after a breakthrough seizure.

In summary, timely diagnosis, evidence-based treatment, and prevention-focused care improve long-term health outcomes.