Natural history of patients with psychogenic nonepileptic seizures.

The purpose of this study was to investigate the long-term outcome of patients with psychogenic nonepileptic seizures (PNES), who never visited a psychologist and never received a proper therapy for their condition (due to lack of resources). We also aimed to investigate factors potentially associated with the outcome in these patients. We studied all patients with PNES, who were admitted to the epilepsy monitoring unit at the Shiraz Comprehensive Epilepsy Center, from 2008 until 2013. In a phone call interview to the patients in November and December 2018, we obtained the following information: seizure outcome, history of receiving any psychotherapy after confirming their diagnosis at referral, and finally, their current marital status, education, and employment status. 69 patients had the inclusion criteria. Thirty-six patients (52%) were seizure-free during the past 12 months, but 33 (48%) still suffer from seizures. The only variable (at diagnosis), which was significantly associated with their outcome, was duration of their condition before they received a definite diagnosis. More than half of the patients with untreated PNES may become free of seizures after they receive a definite diagnosis and with the passage of time. Longer duration of PNES before the patients received a definite diagnosis may affect their long-term outcome.

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