Epilepsy 1 Flashcards
symptoms of seizures
visual and auditory hallucinations
tonicity, spasms, clonus
alteration of consciousness
paroxysmal (sudden change) in behavior/consciousness
etiologies of epileptic seizures
neuronal level
occur because cerebral cortical neurons fire excessively
most common etiology of epilepsy
cryptogenic = unknown cause
causes of seizures in children
FEVER IS NOT EPILEPSY
1) genetic predisp of disease involving cortex
2) infection = febrile
3) trauma
4) congenital
5) metab disturbances
causes of seizures in adults
1) stroke
2) tumor = meningioma, cavenrous hemangioma
3) trauma
4) metabolic disorder = atherosclerosis = subclinical cerebral infarcts
5) infection
bilateral limbic circuits involved in what seizures
partial complex seizures originate in temporal lobe = NOT TEMPORAL LOBE EPILEPSY
seizures begin in 1 of 2 ways
1) focal, localized = partial
2) diffusely around cortex = generalized
describe partial seizures
1) origin
2) simple partial
3) complex partial
1) 1 area then spread (if spread = secondary generalized seizure)
2) simple = conscious awareness and memory intact
cortex involved usu
can become secondary general or complex
3) complex = impaired consciousness hippocampal involve b/l = memory loss post-ictal state most common seizure can become secondary generalized
primary generalized tonic-clonic seizure
1) origin
2) characterized by what symtpoms
3) compare to secondary generalized
1) start diffuse since cortex is hyperexcitable
2) alternating stiffness and jerky movements
3) secondary looks same but preceded by partial seizure
subcategories of primary generalized and describe
1( myoclonic = motor layers, rapid contract face, neck, shoulders
2) generalized tonic-clonic = most common, preceded by HA, mood change, lethargy,
violent jerk of arms and legs
3) absence = staring/eye blinking
no memory
describe complex parital
usu preceded by…
what happens during seizure
how long last
where usu start
impaired consciousness and memory usu with confused post-ictal state
usu preceded by seizure aura
during seizure
1) automatisms = spontaneous purposelss motor/verbal behavior without conscious control
last 1 minute
usu start in temporal lobe
describe primary generalized absence seizure
describe symptoms
usu what age
precipitated by…
memory or not?
starts diffuse from many brain area but only affect afferent cortex layers
blank stare without motor component
usu children 60% outgrow
precipitated by hyperventilation
no memory