Isolated focal cortical dysplasia

Isolated focal cortical dysplasia (FCD) is a condition where a small area of the brain's outer layer (the cortex) did not develop normally before birth. This abnormal area can disrupt the brain's electrical signals, leading to seizures. 'Isolated' means the dysplasia occurs on its own, without being part of a larger brain malformation or syndrome. It is one of the most common causes of epilepsy that does not respond well to medication, especially in children. The main symptom is recurring seizures, which can vary widely in type and severity depending on which part of the brain is affected. Some people have seizures that cause shaking or jerking movements, while others may experience brief staring spells, sudden falls, or unusual sensations. In some cases, especially when the affected area is large or located in an important brain region, there may also be developmental delays, learning difficulties, or weakness on one side of the body. Treatment focuses on controlling seizures. Anti-seizure medications are usually tried first, but many people with FCD do not respond well to them. For those whose seizures come from a clearly identified area, brain surgery to remove the abnormal tissue can be very effective and sometimes leads to complete seizure freedom. Other options include dietary therapies like the ketogenic diet and newer approaches such as laser ablation or responsive neurostimulation. Research into the genetic causes of FCD is growing rapidly and may lead to more targeted treatments in the future.

Data sourced from FDA regulatory filings and ClinicalTrials.gov. Updated periodically.

Bring these to your next appointment

• Q1.Is my MRI showing a clear area of focal cortical dysplasia, and if not, what additional tests can help find it?,Am I or is my child a candidate for epilepsy surgery, and should we be evaluated at a specialized epilepsy center?,Should genetic testing be done on blood or brain tissue, and which genes should be tested?,What are the realistic chances that surgery could make me seizure-free, and what are the risks?,Are there any clinical trials or newer treatments targeting the mTOR pathway that I might qualify for?,What should I do if a seizure lasts more than 5 minutes, and should I have a rescue medication at home?,What support services — such as neuropsychology, educational planning, or mental health care — should be part of my care plan?

Common questions about Isolated focal cortical dysplasia

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