How Are Seizures Diagnosed?

Diagnosis

If you think you’ve experienced a seizure, certain tests and methods can help determine the cause and the probability of recurrence.

A health care provider, typically a neurologist, will first inquire about your health history and details about your seizure.

Your doctor may perform the following:

  • Neurological exam, during which your health care provider may test motor skills and mental functions, and inquire about your emotional state
  • Electroencephalogram (EEG), during which a technician will attach electrodes (pads) to your head to monitor electrical brain activity
  • Imaging tests, including a computerized tomography (CT) scan, followed by a magnetic resonance i are a candidate for nonmedication treatment options such as epilepsy surgery maging (MRI) scan of the brain, and, if necessary, a positron emission tomography (PET) scan of the brain. These tests can spot lesions (structural abnormalities) such as bleeding, tumors, developmental malformations, or other abnormalities in the brain that can cause seizures
  • Blood tests to rule out infections, iron deficiencies, diabetes, and other underlying health issues that can trigger seizures
  • Spinal tap (lumbar puncture) as needed, to remove cerebrospinal fluid and test for infections

If you have recurring seizures even after trialing two antiseizure medications, stereotactic EEG studies (involving the insertion of small electrodes into the brain through the skull) can help localize where the seizures begin in your brain. This will help determine whether you and neuromodulation.

How Are Seizures Treated?

Types

In many cases, seizures can be an isolated incident. Doctors may not begin a course of treatment unless your tests indicate a high risk of recurrence or if the seizure is followed by more seizures.

Depending on the cause, severity, and location of your seizures in the brain, there are medications, dietary plans, electrical stimulation procedures, and surgical procedures available as treatment options.

Medication for seizures

Initiating antiseizure medication is a common strategy, and a first-line treatment for controlling seizures. Some medications can stop seizures when they occur, while others can be taken daily to help prevent future episodes.

With so many kinds of antiseizure medication available, it may take time to find the right one for you. The goal is to find the one that yields the best results with the least side effects.

Seizure medication side effects can include dizziness, weight changes, mood shifts, and fatigue. More serious side effects are rare but can include damage to the liver or bone marrow.

Dietary therapy

Adopting a ketogenic diet — a high-fat and low- to no-carb food plan — may help stop or reduce the frequency of seizures. Since adhering to this kind of diet may be challenging for many patients, there are modified versions, including the modified Atkin’s diet and low glycemic index diet, which can also be beneficial in treating seizures. These diets typically work alongside medications and do not replace them. You may be required to work with a nutritionist to adhere to a specific diet.

Electrical stimulation

Several types of electrical brain stimulation are used to treat seizures. This type of treatment is known as neuromodulation. Options include:

  • Deep brain stimulation. For this treatment, doctors implant electrodes in specific brain areas of your brain. The electrodes deliver electrical impulses from a small, pacemaker-like device implanted under the skin below your collarbone.
  • Vagus nerve stimulation. The vagal nerve runs from the brain to the gastrointestinal system. Electrical currents are sent along the vagal nerve from a small device implanted under the skin of your chest, helping reduce the recurrence of seizures. Medication may still need to be taken.
  • Responsive neurostimulation. A small device is placed on the brain's surface within the skull and is connected to two wires (electrodes), which can detect abnormal brain activity and deliver electrical impulses to the area of origin to stop the seizure.

Neuromodulation, over time, can help reduce the excitability of the epileptic areas of the brain, thereby reducing seizures and improving quality of life. This treatment does not come with the typical side effects associated with medications.

Surgical options

When other treatment options are unsuccessful, there are several other surgical options available to treat seizures. These procedures generally involve surgically removing areas of the brain where seizures originate or cutting network connections between the neurons of the right and left hemispheres of the brain. A minimally invasive technique called laser interstitial thermal therapy (LITT) using thermal energy to ablate (burn) a very focused area of the brain, can sometimes be performed, which causes minimal impact on brain function and has a shorter recovery time.

FAQs

FAQs

Some seizures cause jerking or shaking of the limbs, unusual sensations, and loss of awareness or consciousness.

Recurring seizures may have an impact on brain functions such as memory, attention, and concentration and may even cause changes in mood and sleep patterns. Prolonged seizures lasting more than five minutes can lead to permanent brain damage.

On average, seizures can last from 30 seconds to two minutes. Any seizure lasting more than five minutes constitutes a severe seizure and is a medical emergency.

In addition to epilepsy, there are many causes of provoked seizures in adults, including low blood sugar, high fever, drug or alcohol withdrawal, head injury, dehydration, or lack of sleep.

Seizures in infants and children are common. They can have the same triggers as adult seizures — illness/fever, stress, flashing lights, sleep deprivation, or low blood sugar, in addition to genetic factors.

Get Care

Trust NewYork-Presbyterian for Seizure Treatment

NewYork-Presbyterian has a world-class team of neurologists familiar with the symptoms and causes of seizures. Our team of top-notch doctors and technicians is here to help you find solutions and reduce the impact seizures can have on your or your loved one’s daily life.

Having a seizure can be scary. Contact NewYork-Presbyterian today for compassionate care and treatment options.