Epilepsy is treated primarily with daily anti-seizure medications, which control seizures in roughly two-thirds of people. For the remaining third, options include surgery, implanted nerve stimulation devices, specialized diets, and rescue medications for emergencies. The best approach depends on the type of seizures, where they originate in the brain, and how well a person responds to initial treatment.
Anti-Seizure Medications
Medications are the first line of treatment for nearly everyone diagnosed with epilepsy. They work by shifting the balance of electrical activity in the brain, calming overexcited nerve cells so they’re less likely to fire in the rapid, synchronized bursts that cause seizures. Different drug classes do this in different ways: some stabilize sodium channels on nerve cells to prevent them from reactivating too quickly, others boost the brain’s natural calming chemical (GABA), and still others block glutamate, the brain’s primary excitatory signal.
When someone starts their first medication and it’s well-chosen for their seizure type, there’s a reasonable chance of becoming seizure-free. If that first drug doesn’t work, a second is tried, often from a different class. After two medications have failed at adequate doses, the International League Against Epilepsy formally classifies the condition as drug-resistant epilepsy. But “drug-resistant” doesn’t mean hopeless. A 2018 follow-up study found that 23.6% of people achieved seizure freedom on a third medication. Even on a fourth, fifth, or sixth drug, roughly 14 to 15% still became seizure-free at each attempt. In one study of 403 patients who had failed at least two medications, 31% eventually achieved seizure freedom with further trials.
Side Effects of Medications
Not all anti-seizure drugs affect thinking and energy the same way. Researchers have informally grouped medications into “cognitively clean” and “cognitively dirty” categories. Drugs like lamotrigine, levetiracetam, and valproate tend to be better tolerated in terms of mental sharpness. Levetiracetam, for example, is reportedly well-tolerated for cognition, mood, and balance, even in older adults.
On the other end, topiramate is commonly linked to problems with word-finding, attention, processing speed, and working memory. These effects tend to be less severe at lower doses and in people with higher educational attainment or later-onset epilepsy. Interestingly, despite cognitive complaints being the most common reason people stop topiramate, most patients in a large postmarketing study chose to continue it beyond six months because it controlled their seizures better than previous medications. That tradeoff between side effects and seizure control is one of the central tensions in epilepsy treatment.
Surgery for Drug-Resistant Epilepsy
When medications fail to control seizures, surgery becomes a serious consideration, particularly if seizures originate from a single identifiable area in the brain. The most common approach is focal resection, where a surgeon removes the specific brain tissue generating seizures. Temporal lobe resection is the most frequently performed version, since the temporal lobe is the most common origin point for focal seizures. Frontal, parietal, and occipital lobe resections are also possible depending on where seizures start.
If a structural abnormality like a tumor or blood vessel malformation is causing seizures, a lesionectomy targets and removes just that abnormality. For people whose seizure focus sits in a brain region that can’t be safely removed (such as an area controlling speech or movement), a technique called multiple subpial transections makes shallow cuts in the brain tissue to disrupt seizure spread without removing the tissue itself.
Newer, less invasive options have expanded the surgical landscape. Laser interstitial thermal therapy uses a thin probe guided by MRI to heat and destroy a small area of seizure-generating tissue through a tiny incision, avoiding open surgery. Stereotactic radiosurgery delivers focused radiation beams to the seizure focus without opening the skull at all. For children with severe seizures originating from an entire hemisphere of the brain, hemispherectomy or hemispherotomy disconnects that hemisphere from the rest of the brain. Corpus callosotomy, which splits the main connection between the brain’s two halves, is typically reserved for people with severe generalized epilepsy who experience dangerous drop attacks and falls.
Implanted Stimulation Devices
For people with drug-resistant focal epilepsy who aren’t good candidates for surgery, three types of implanted devices can reduce seizure frequency by delivering electrical pulses to the nervous system.
- Vagus nerve stimulation (VNS) involves a small generator implanted in the chest that sends regular electrical signals to the vagus nerve in the neck, which relays them to the brain. At one year after implantation, patients in one study experienced an average seizure reduction of about 48%. VNS tends to work best for people with focal seizures and a later age of epilepsy onset.
- Deep brain stimulation (DBS) places electrodes directly into a specific area deep in the brain. It showed higher efficacy than VNS in a head-to-head comparison, with an average seizure reduction of about 65% at one year. DBS may be particularly suitable for people with a longer history of epilepsy and those who have had prior brain surgery.
- Responsive neurostimulation (RNS) takes a different approach: it continuously monitors brain activity and delivers targeted stimulation only when it detects the electrical patterns that precede a seizure, essentially interrupting seizures before they fully develop.
All three devices are considered palliative rather than curative. They reduce seizure frequency and severity but rarely eliminate seizures entirely. Their effectiveness also tends to improve over time, with better results at one and two years compared to the first few months after implantation.
Dietary Therapies
The ketogenic diet has been used to treat epilepsy since the 1920s, and its track record is remarkably consistent across all age groups and seizure types. The diet is very high in fat (70 to 80% of daily calories), very low in carbohydrates (5 to 10%), and moderate in protein (10 to 20%). This macronutrient ratio forces the body to burn fat for fuel instead of glucose, producing molecules called ketones that appear to have a stabilizing effect on brain activity.
The ketogenic diet is most commonly prescribed for children with drug-resistant epilepsy, often when medications have failed and surgery or nerve stimulation aren’t viable options. It requires careful medical supervision, since the strict ratios need to be maintained precisely and nutritional deficiencies can develop. A less restrictive variation, the modified Atkins diet, follows similar principles with more flexibility around protein and calorie intake, making it easier for adolescents and adults to maintain.
Rescue Medications for Emergencies
Even with good daily seizure control, some people experience breakthrough episodes of cluster seizures, which are bursts of seizures that differ from their usual pattern. Rescue medications are fast-acting drugs kept on hand for these emergencies, designed to be given outside a hospital setting by a caregiver or the person themselves.
Diazepam nasal spray is one of the most widely used options, now approved for people ages 2 and older. It’s delivered through a single-use sprayer inserted into one nostril. If the seizure doesn’t respond to the first dose, a second can be given at least four hours later, but the medication shouldn’t be used more than five times a month or more often than every five days. A buccal film version of diazepam (placed inside the cheek) was approved in 2024 for children ages 2 to 5, adding another option for young children who may not tolerate nasal delivery.
Lifestyle Changes That Reduce Seizures
Lifestyle modifications don’t replace medical treatment, but they can meaningfully reduce how often seizures occur. Sleep deprivation is one of the most reliable seizure triggers. Fatigue makes the brain more vulnerable to the kind of abnormal electrical firing that produces seizures, so maintaining a consistent sleep schedule is one of the most impactful things you can do.
Alcohol is another common trigger. Even one or two drinks can provoke seizures in some people with epilepsy. Recreational drugs carry similar risks. Stress management also plays a role. While the direct link between stress and seizures isn’t fully proven, many people with epilepsy report that keeping stress levels in check reduces their seizure frequency. Regular exercise is generally beneficial, though it’s worth confirming with your neurologist that your planned activities are appropriate for your situation.
Practical considerations matter too. If driving restrictions apply in your state, using public transportation and exploring community resources for people with epilepsy can help maintain independence while treatment is being optimized.