Abstract
This chapter explains how psychogenic nonepileptic seizures (PNES) can be used as an expression of “neurologic” pathology. Individual “neurologic,” “physical,” or “organic” factors explain PNES. PNES have been characterized as “episodes of altered movement, emotion, sensation, or experience, similar to those seen in epilepsy, but which have purely emotional causes.” The large number of studies describing neuropsychological performance deficits in patients with PNES supports the idea of PNES as a neurologic disorder. The chapter also explains brain abnormalities; many patients with PNES have neuroimaging or electroencephalographic abnormalities. Constitutional and developmental factors, neurologic factors, and psychogenic factors are briefly explained.
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