Emergence Phenomena
A universally challenging problem facing emergency physicians; this Lancet article sums up the topic very well, in fair detail. (See this reference). It really boils down to a good history - here is where the eyewitnesses and paramedics are really helpful (sometimes). And no... urinary incontinence doesn't quite help (See this reference). This questionnaire may be useful:
Or this flowchart combining history, physical and eye-witness account:
http://singem.blogspot.com.es/2015/09/does-this-patient-have-seizure-or.html