Drug-Resistant Epilepsy

Drug-resistant epilepsy (also called refractory epilepsy) is a form of epilepsy in which seizures persist despite treatment with at least two appropriately chosen and tolerated antiseizure medications. It is a more complex condition that often requires specialized care beyond standard medication management.

People with drug-resistant epilepsy may benefit from advanced evaluation techniques such as an electroencephalogram (EEG) to better understand seizure patterns and brain activity.

Symptoms of drug-resistant epilepsy are similar to other forms of epilepsy but continue despite treatment. These may include:

• Recurrent seizures that are not controlled with medication
• Loss of awareness or consciousness
• Uncontrolled movements or convulsions
• Staring spells or brief lapses in attention
• Confusion or fatigue after a seizure (postictal state)

Drug-resistant epilepsy can result from a variety of underlying causes. In some cases, the exact cause is not known.

Common causes and risk factors include:

• Structural brain abnormalities, such as scar tissue or lesions
• Genetic conditions affecting brain function
• Previous brain injury or trauma
• Stroke or infections affecting the brain
• Developmental disorders

Certain forms of epilepsy, such as focal epilepsy, may be more likely to become drug-resistant.

Diagnosing drug-resistant epilepsy involves confirming that seizures persist despite appropriate medication trials and identifying the underlying cause.

Your care team may use:

• Detailed medical history and seizure tracking
• Neurological examination
• Advanced imaging such as MRI or CT scans
• Long-term video EEG monitoring
• Functional brain mapping in select cases

At Baptist Health Brain & Spine Care, patients may undergo evaluation in a specialized Epilepsy Monitoring Unit (EMU). These units provide continuous video and EEG monitoring in a controlled hospital setting, allowing specialists to capture and analyze seizures in real time. EMUs play a critical role in confirming the diagnosis, identifying the exact seizure focus and determining whether advanced treatments such as surgery or neuromodulation are appropriate.

An accurate diagnosis helps determine whether advanced treatments such as surgery or neuromodulation may be appropriate.

When medications alone are not effective, a range of advanced treatments may help control seizures.

Treatment options may include:

• Optimization or adjustment of antiseizure medications
• Epilepsy surgery to remove the seizure focus when safe
• Neuromodulation therapies such as vagus nerve stimulation (VNS) or responsive neurostimulation (RNS)
• Dietary therapies such as ketogenic or modified Atkins diets

A comprehensive epilepsy program can help determine the most effective combination of therapies tailored to each patient.

Uncontrolled seizures can lead to serious complications, including:

• Increased risk of injury during seizures
• Cognitive or memory difficulties
• Mental health challenges such as anxiety or depression
• Sudden unexpected death in epilepsy (SUDEP)

Early and specialized care is important to reduce these risks and improve long-term outcomes.

Drug-resistant epilepsy is not always preventable, but early diagnosis and proper treatment of epilepsy can reduce the risk of seizures becoming uncontrolled.

Helpful strategies include:

• Taking medications exactly as prescribed
• Attending regular follow-up appointments
• Avoiding seizure triggers such as sleep deprivation or stress
• Seeking specialized care if seizures are not controlled

If you or a loved one has seizures that are not responding to medication, it may be time to seek specialized care. A comprehensive epilepsy evaluation can help identify advanced treatment options and improve seizure control.

To schedule a visit with a Baptist Health Brain & Spine Care provider, fill out an appointment request form or call 833-596-3876.