Lennox-Gastaut syndrome treatment

Lennox-Gastaut syndrome (LGS) treatment is a unique journey for every patient. Because this condition involves various types of seizures and developmental challenges, doctors often use several different strategies at once to help limit seizure activity.

LGS is a rare form of childhood epilepsy that causes frequent seizures and developmental delays. These seizures can sometimes worsen behavioral or cognitive issues, and they also increase the risk of serious medical complications. For these reasons, the primary goal of any LGS therapy plan is to reduce or stop seizures entirely. From there, other therapies or interventions can be added to manage specific problems and improve daily life.

Today, there are a variety of LGS treatment options available to help families find relief. These include:

• anti-seizure medications
• specialized dietary therapies
• medical devices like nerve stimulators
• surgical interventions
• supportive treatments for physical and emotional health

Because the syndrome affects everyone differently, the most effective plans are those tailored specifically to a patient’s individual needs and health history.

Anti-seizure medications (ASMs)

Anti-seizure medications (ASMs) for LGS serve as the foundation of care for most patients. While different medications work in various ways, they all share a common goal to control the abnormal electrical activity in the brain that causes seizures.

Finding the right treatment for LGS seizures is often a complex process. In fact, a poor response to standard medications is actually part of how LGS is diagnosed. Because the condition is so resistant to typical treatments, most people require a combination of multiple drugs. This approach is known as LGS polytherapy.

When building a treatment plan, doctors consider specific seizure types and the patient’s overall health to determine which medication combination will be most effective.

ASMs approved for LGS

Eight ASMs are currently approved to treat seizures in LGS:

• clobazam (sold as Onfi and others)
• clonazepam (sold as Klonopin and generics)
• Epidiolex (pharmaceutical-grade cannabidiol)
• felbamate (sold as Felbatol and generics)
• fenfluramine (sold as Fintepla and generics)
• lamotrigine (sold as Lamictal and others)
• rufinamide (sold as Banzel and generics)
• topiramate (sold as Topamax and others)

These LGS medications are often used as add-on therapies alongside other treatments to provide better seizure control. It is worth noting that clonazepam and felbamate are older therapies that can carry significant side effects. Because of these risks, many doctors only prescribe felbamate if several other treatments have already failed.

ASMs used off-label in LGS

LGS seizure treatment often involves the use of medications that are approved for other types of epilepsy but have proven effective for this condition. Using medications in this way is known as “off-label” use. Common ASMs used off-label for LGS include:

• ethosuximide (sold as Zarontin and generics)
• levetiracetam (sold as Keppra and others)
• valproate
• vigabatrin (sold as Sabril and others)
• zonisamide (sold as Zonegran and others)

Extensive research supports valproate’s efficacy in treating this syndrome. Because of its strong track record, this therapy is often a preferred first-line treatment for LGS seizure control.

ASMs that should be avoided in LGS

While many medications help, there are also some ASMs that doctors typically don’t recommend for LGS, as they can worsen certain types of seizures. These include:

• carbamazepine (sold as Tegretol and others)
• gabapentin (sold as Neurontin and others)
• lacosamide (sold as Vimpat and others)
• oxcarbazepine (sold as Trileptal and others)
• phenobarbital
• phenytoin (sold as Dilantin and others)

Dietary therapies

Specialized diets are also an important part of LGS management. These diets alter how the body uses energy, which may help regulate abnormal brain signaling patterns that lead to seizures. By shifting the body’s primary fuel source from sugar to fat, these metabolic changes can have a stabilizing effect on the brain.

Dietary therapies for LGS include:

• classic ketogenic diet: This is a strictly monitored high-fat, low-carbohydrate, and moderate-protein diet.
• modified Atkins diet: This is a less-restrictive option that follows the same high-fat principles as the classic ketogenic diet but offers greater flexibility in food choices.
• medium-chain triglyceride diet: Similar to the classic ketogenic diet, this version uses specific types of fats that allow the patient to eat more carbohydrates and proteins.
• low glycemic index treatment: This is a more relaxed diet that focuses on carbohydrates that don’t cause a spike in blood sugar, such as those found in certain fruits and whole grains, while strictly limiting sugary foods.

Because these diets are medical interventions, they require close supervision from a neurologist and a specialized dietitian to ensure the patient remains healthy and well-nourished.

Medical devices and surgical options

When medical and dietary interventions do not provide enough relief, medical devices and surgery can offer another layer of control for LGS seizures. These options work by physically altering or interrupting the electrical signals that lead to a seizure.

LGS treatment options in this area include:

• vagus nerve stimulation: A small device is implanted in the chest that sends regular, mild pulses of electrical energy to the brain via the vagus nerve.
• deep brain stimulation: This involves placing electrodes in specific areas of the brain that are connected to a stimulator in the chest, helping to regulate abnormal brain activity.
• responsive neurostimulation: A smart device monitors brainwaves and delivers a small electrical pulse to stop a seizure just as it begins.
• surgical interventions: In some cases, surgeons may perform a corpus callosotomy or other surgical procedures.

Because these treatments are more invasive, they are typically considered after a patient has tried several medications and specialized diets without success. A team of specialists will carefully evaluate each patient to determine which of these advanced options offers the best chance of improving quality of life.

Vagus nerve stimulation

In vagus nerve stimulation, a small device similar to a pacemaker is implanted under the skin of the chest. This device delivers a consistent electrical current to the vagus nerve, which runs from the brain through the neck and into the chest.

By sending these regular pulses, the device modulates brain signaling and helps dampen the abnormal activity that triggers seizures. While this treatment usually doesn’t stop seizures entirely, it can significantly reduce their frequency and intensity. It is particularly effective for atonic seizures, or “drop attacks,” and many families find that the benefits of the device actually increase over time as the brain adapts.

Other brain stimulation therapies

Deep brain stimulation (DBS) and responsive neurostimulation (RNS) are other types of brain stimulation therapies used for LGS. Both methods involve a surgical procedure to implant electrodes directly into the brain. These electrodes deliver small electrical charges to adjust nerve signaling and disrupt the patterns that cause seizures.

The main difference between the two lies in how they react to brain activity:

• DBS devices deliver a constant, steady stream of electrical stimulation to a specific area of the brain, regardless of what the patient is doing.
• RNS devices constantly monitor brainwaves and deliver a pulse only when they detect unusual activity that suggests a seizure is starting.

The exact electrode locations depend on a patient’s specific seizure features. For many people, these advanced technologies can effectively reduce seizure frequency and improve daily stability.

Surgical interventions

Beyond device-based stimulation, several surgical options may be considered for patients with LGS. These procedures aim to either stop the spread of seizures or remove the specific area of the brain causing them.

Surgical options for LGS include:

• corpus callosotomy: This involves severing the connection between the two halves of the brain to prevent seizures from spreading from one side of the brain to the other. Corpus callosotomy for LGS is particularly effective at reducing the severity of “drop attacks,” though it usually does not eliminate all seizures.
• resection: This involves surgically removing the specific area of the brain where seizures originate. While this is a preferred option because it can be curative, it is rare for people with LGS to have a single, identifiable starting point for their seizures.
• hemispherectomy: This is a more significant procedure where one half of the brain is either removed or disconnected. This is usually only considered if one side of the brain is structurally abnormal and is the clear source of the patient’s seizure activity.

Because these are major surgeries, a medical team will perform extensive testing to ensure the potential benefits to the patient’s quality of life outweigh the risks involved.

Rescue treatments for seizure emergencies

For many people living with LGS, therapies significantly reduce the number of seizures but may not eliminate them entirely. Because of this, some episodes may require immediate, urgent care.

A rescue medication is an emergency treatment for seizures that caregivers can administer at home to stop a prolonged episode. These medications are designed for quick absorption and are typically delivered through the nose (nasal spray), the mouth (buccal or oral), or the rectum.

Common rescue medications in LGS may include:

• diazepam (sold as Diastat and others)
• lorazepam (sold as Ativan and generics)
• midazolam (sold as Nayzilam and generics)

Experts recommend that caregivers administer rescue therapy if a patient experiences seizures that deviate from their “normal” pattern. Key warning signs include seizures that:

• feel different than past episodes
• occur more frequently than usual
• last longer than most of the patient’s seizures
• occur in clusters (one after another)
• happen when the patient is particularly vulnerable, such as during an illness

It is vital to recognize a life-threatening condition called status epilepticus. This occurs when a seizure lasts longer than five minutes, or when multiple seizures happen within a 30-minute window without the person regaining consciousness in between. If status epilepticus occurs, caregivers should administer rescue therapy and seek emergency medical care immediately.

To stay prepared, caregivers should develop a formal seizure action plan. This document outlines specific scenarios and exactly how to respond to them. Sharing this plan with school staff, therapists, and other family members ensures that everyone involved in a child’s care knows how to act quickly and confidently during an emergency.

Supportive therapies and daily care

Beyond seizure control, supportive therapies for LGS play an essential role in managing the broader impact of the condition. These treatments address the cognitive, behavioral, and physical challenges that often accompany the syndrome, helping to improve daily independence and overall quality of life.

Physical and occupational therapies focus on the body’s ability to navigate the world safely and effectively.

• Physical therapy helps improve strength, balance, and mobility, which is particularly important for patients who experience frequent falls or “drop attacks.”
• Occupational therapy helps patients develop practical skills for everyday activities, such as dressing and eating, by using adaptive tools and strategies.

Because LGS can cause developmental delays, targeted support for the mind and voice is often necessary.

• Speech therapy: This can help improve language development and communication skills, providing patients with more ways to express their needs and feelings.
• Educational interventions: Many children benefit from Individualized Education Programs or other special education services tailored to their specific intellectual and developmental needs.

The complex nature of LGS often brings about behavioral changes and emotional strain for both the patient and the family.

• Behavioral support: This helps address the cognitive and behavioral problems that can stem from frequent seizure activity, offering strategies to manage irritability or impulsivity.
• Mental health support: Counseling and support groups provide a safe space for people with LGS and their loved ones to process the emotional toll of the condition. Connecting with others in similar situations can significantly reduce the feeling of isolation and help build long-term resilience.

By combining these supportive treatments with medical and dietary interventions, families can create a holistic care plan that supports every aspect of a patient’s well-being.

---

Lennox-Gastaut Syndrome News is strictly a news and information website about the disease. It does not provide medical advice, diagnosis, or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.