01:830:310 Lecture Notes - Lecture 13: Absence Seizure, Generalised Tonic-Clonic Seizure, Clonus
30 Jul 2016
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Document Summary
Not all seizures are a result of epilepsy (ex. brain damage, tumors) Epileptics have seizures generated by their own brain dysfunction. Prevalence: 1-4% of the population for whom there will be multiple seizure episodes (but. 1:20 will have a mild, insignificant seizure once) Difficult to diagnose due to the diversity and complexity of epileptic seizures. A disruption of consciousness associated with a cessation of ongoing behavior. Partial seizure - does not involve the whole brain. Generalized seizure - involves the entire brain. Aura - can have weird sensations (touch, vision, smell, hearing) Post-ictal - regain consciousness but confused and tired. Atonic - no tone at all; collapse (more common in children) Simple - no alterations in consciousness (only changes in sensory or motor) Complex - altered awareness and sensory/motor symptoms. Secondarily generalized seizure - begins in one place and spreads via thalamus. Originates in cortical region controlling the moving body part. Tests: eeg - electroencephalogram, blood work, scans.
