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Epilepsy or Psychological Seizures?

Eye Movements May Help Doctors Tell the Difference

Health Trauma May Trigger Seizures

In a second study, researchers compared 26 people whose non-epileptic seizures began when they were aged 55 or older with 241 people whose non-epileptic seizures started at a younger age.

Compared with the younger seizure patients, patients with non-epileptic, psychological seizures beginning later in life were roughly twice as likely to be male, and eight times as likely to have other severe health problems.

The older group was more likely to report health-related traumatic experiences (47% compared to 4%) and less likely to report a history of sexual abuse (4% vs. 32%).

"Our findings suggest that the development of physical ill health, especially when it has been frightening to the patient, may be an important triggering factor for non-epileptic seizures," says researcher Roderick Duncan, MD, PhD, of the West of Scotland Regional Epilepsy Service in Glasgow.

Raising Awareness

The third study involved 18 people treated in emergency rooms for seizures that did not respond to drugs. Compared to patients with epileptic seizures, those with non-epileptic seizures were more likely to be younger -- with an average age of 25 vs. 42 -- and have lower blood levels of the muscle enzyme creatine kinase, which normally rises after epileptic seizures.

Benbadis says the three studies should help raise awareness about psychologically-based non-epileptic seizures among patients and their doctors.

"When a patient has seizures but doesn't respond to treatment, it is appropriate to try different medications for a few months or even a year or two," he says. "After that, there are just two possibilities. Either it is not epilepsy, or it is epilepsy that is not responsive to drugs. In both cases, these patients need to be monitored at an epilepsy center to determine where to go from there."

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