Logsdail and Toone listed criteria for diagnosing post-itcal psychosis in a patient with a seizure disorder. A psychotic episode may precede the recognition of the seizure disorder.
Criteria for post-ictal psychosis:
(1) episodes of psychosis occurring within 1 week of a seizure (or a cluster of seizures)
(2) the episode of psychosis lasts >= 15 hours and < 2 months
(3) the patient may experience delirium, delusions and/or hallucinations in clear consciousness
(4a) a history of psychosis or treatment with antipsychotic medications within the past 3 months
(4b) drug toxicity due to an antiepileptic drug
(4c) an EEG showing an absence of seizure activity
(4d) a recent history of head trauma
(4e) a recent history of alcohol and/or drug intoxication and/or withdrawal
• During the psychotic episode the patient may experience confusion and/or delirium.
• Hallucinations may be auditory, visual, somatosensory and/or olfactory.
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