Psychogenic non-epileptic seizures are seizure events which appear similar to those of Epilepsy, but without the associated (easily identifiable) electrical brainwave patterns.
The seizures can be severe, and last up to two minutes.
The cause is unknown, but current opinion is that it's a predominantly psychological disorder.
It has been estimated to affect between 2 and 33 people per 100,000 - meaning there is a lack of data regarding its prevalence. Those with PNES are frequently mis-diagnosed.
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