Objective: Female predominance is evident in childhood-onset psychogenic nonepileptic seizures (PNES). Understanding gender-specific vulnerability to PNES may provide a unique insight into its cause and management. We aimed to investigate gender differences in demographic characteristics, triggering factors and psychosocial functioning in children and youth with PNES.
Methods: We retrospectively reviewed patients who were evaluated in the PNES clinic at Children's Healthcare of Atlanta from July 2019 to March 2020 and completed questionnaires to assess adverse life events, psychosocial function (Pediatric Symptom Checklist-17 [PSC-17]), and somatic symptoms (Children's Somatic Symptom Inventory-8, [CSSI-8]).
Results: Forty-nine consecutive patients (38 girls, 11 boys) with a median age of 15.0 (9-19) years were included in the study. We performed univariate analysis and evaluated significant variables related to PNES according to sex. Majority of both genders experienced daily to weekly PNES, came from dysfunctional families, scored high on PSC-17, were treated for neuropsychiatric illnesses, and experienced bothersome somatic symptoms. The variables significantly different between genders were suicidal thoughts, history of trauma, and learning disability. Suicidal thoughts and trauma, particularly sexual abuse, were significantly more prevalent in girls (p = 0.03) whereas learning disability was more common in boys (p = 0.03).
Conclusion: Females predominated in our PNES clinic (F:M = 3.5:1). Gender differences in predisposing factors were sexual abuse in females and learning disability in males. Our data highlight the gender-specific risk factors and vulnerability to PNES. The awareness of gender difference may guide more targeted intervention for children and youth with PNES.
Keywords: Adolescence; Adverse early life experiences; Conversion reaction; Functional neurological disorder; Learning disability; Post-traumatic stress disorder; Sexual abuse.
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