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07.qxd 3/10/08 9:35 AM Page 260<br />

260 Other major syndromes<br />

Simple partial status epilepticus may, albeit rarely, leave<br />

sequelae such as hemiparesis (Desbiens et al. 1993) (which<br />

may be permanent [Borchert and Labar 1995]) or a motor<br />

aphasia (Scholtes et al. 1996b).<br />

Complex partial status epilepticus may also have permanent<br />

sequelae but this appears to be uncommon.<br />

Reported sequelae, after 1–3 days of status, include amnesia,<br />

with or without other cognitive deficits (Krumholz et<br />

al. 1995), and in one case hemianopia and receptive aphasia<br />

after an episode that lasted 8 days (Donaire et al. 2006);<br />

in this latter case, autopsy revealed laminar cortical necrosis<br />

in the left hemisphere involving the occipital, parietal,<br />

and temporal cortices.<br />

Table 7.7 Causes of epilepsy and seizures<br />

Idiopathic generalized epilepsies<br />

Childhood absence epilepsy<br />

Juvenile absence epilepsy<br />

Juvenile myoclonic epilepsy<br />

Idiopathic generalized epilepsy with tonic–clonic seizures only<br />

Metabolic<br />

Hypoglycemia<br />

Hyperglycemia<br />

Hyponatremia<br />

Hypernatremia<br />

Hypocalcemia<br />

Hypomagnesemia<br />

Uremia<br />

Toxic<br />

Medications<br />

Clozapine<br />

Phenothiazines<br />

Bupropion<br />

Tricyclic antidepressants<br />

Lithium<br />

Tiagabine<br />

Baclofen<br />

Penicillin<br />

Cefipime<br />

Isoniazid<br />

Busulfan<br />

Cyclosporine<br />

Tacrolimus<br />

Theophylline<br />

Meperidine<br />

Bismuth<br />

Intoxicants<br />

Phencyclidine<br />

Cocaine<br />

Miscellaneous toxins<br />

Iodinated contrast dye<br />

Lead<br />

Grand mal status may be followed by either a personality<br />

change or dementia of variable severity in approximately<br />

one-fourth of patients (Oxbury et al. 1971, Rowan<br />

and Scott 1970); these symptoms, may, in turn, be related<br />

to a loss of hippocampal pyramidal cells (DeGiorgio et al.<br />

1992).<br />

Etiology<br />

The multiple causes of epilepsy and seizures are listed<br />

in Table 7.7, where they are divided into several groups.<br />

The first group, the idiopathic generalized epilepsies (e.g.,<br />

Tin<br />

Domoic acid<br />

Aspartame<br />

Alcohol or sedative/hypnotic withdrawal<br />

Alcohol<br />

Sedative/hypnotics<br />

Common intracranial causes<br />

Mass lesions<br />

Tumors<br />

Abscesses<br />

Vascular malformations<br />

Cerebrovascular disorders<br />

Infarction<br />

Intracerebral hemorrhage<br />

Subarachnoid hemorrhage<br />

Neuronal migration disorders<br />

Mesial temporal sclerosis<br />

Traumatic brain injury<br />

Meningoencephalitis<br />

Meningitis<br />

Encephalitis<br />

Acute disseminated encephalomyelitis<br />

In association with certain dementing and neurodegenerative<br />

disorders<br />

Multi-infarct dementia<br />

Alzheimer’s disease<br />

Neurosyphilis<br />

AIDS dementia<br />

Progressive multifocal leukoencephalopathy<br />

Toxoplasmosis<br />

Dentatorubropallidoluysian atrophy<br />

Choreoacanthocytosis<br />

McLeod syndrome<br />

Wilson’s disease<br />

Spinocerebellar ataxia<br />

Cerebrotendinous xanthomatosus<br />

(continued)

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