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Related Experiment Videos

Pseudoseizures and asthma.

C J de Wet1, J D C Mellers, W N Gardner

  • 1National Neuropsychiatry Unit, Maudsley Hospital, London SE5, UK.

Journal of Neurology, Neurosurgery, and Psychiatry
|April 18, 2003
PubMed
Summary
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Patients with pseudoseizures have a higher prevalence of asthma compared to psychotic controls. This suggests asthma may be a risk factor for developing pseudoseizures, potentially linked to anxiety and hyperventilation.

Area of Science:

  • Neurology
  • Psychiatry
  • Pulmonology

Background:

  • Sexual abuse and head injury are known risk factors for pseudoseizures.
  • Clinical observations suggest a potential link between asthma and pseudoseizures.

Purpose of the Study:

  • To investigate the prevalence of asthma in patients diagnosed with pseudoseizures.
  • To compare asthma rates in pseudoseizure patients versus a control group.

Main Methods:

  • Retrospective analysis of 102 pseudoseizure patients and 70 psychotic controls.
  • Asthma history was reviewed in all participants.
  • Pseudoseizure patients were categorized based on video-electroencephalographic monitoring (VEEM) confirmation.

Main Results:

Related Experiment Videos

  • Asthma was reported in 26.5% of pseudoseizure patients, significantly higher than 8.6% in controls (p=0.003).
  • Similar asthma rates were observed in VEEM-confirmed (29.8%) and non-VEEM-confirmed (23.6%) pseudoseizure subgroups.
  • The association between asthma and pseudoseizures remained significant across both diagnostic subgroups.

Conclusions:

  • A significant association exists between reported asthma and pseudoseizures.
  • Potential mechanisms include somatization, anxiety hyperventilation, and dissociative elaboration.
  • Asthma and anxiety hyperventilation may be risk factors for pseudoseizures; asthma itself could be psychogenic in some cases.