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Seizures that occur after brain injury may be due to the brain adapting to injury (neuroplasticity). [40] This process is known as epileptogenesis. [41] There is loss of inhibitory neurons because they die due to the injury. [41] [40] The brain may also adapt and make new neuron connections that may be hyper-excitatory. [41] [40]
Convulsions can also occur when the blood sugar is too low or there is a deficiency of vitamin B6 (pyridoxine). The pathophysiology of convulsion remains ambiguous. [5] Convulsions are often caused by epileptic seizures, febrile seizures, non-epileptic seizures, or paroxysmal kinesigenic dyskinesia. [2]
A disruption of the supply of oxygen may cause damage to the temporal lobe of the brain. [35] The risk of seizure(s) from a closed head injury is about 15%. [36] In some cases, a patient who has had a head injury is given anticonvulsants, even if no seizures have occurred, as a precaution to prevent them in the future. [37]
Post-traumatic seizures (PTS) are seizures that result from traumatic brain injury (TBI), brain damage caused by physical trauma.PTS may be a risk factor for post-traumatic epilepsy (PTE), but a person having a seizure or seizures due to traumatic brain injury does not necessarily have PTE, which is a form of epilepsy, a chronic condition in which seizures occur repeatedly.
Post-traumatic epilepsy (PTE) is a form of acquired epilepsy that results from brain damage caused by physical trauma to the brain (traumatic brain injury, abbreviated TBI). [1] A person with PTE experiences repeated post-traumatic seizures (PTS, seizures that result from TBI) more than a week after the initial injury. [ 2 ]
Seizures may also occur as a consequence of other health problems; [30] if they occur right around a specific cause, such as a stroke, head injury, toxic ingestion, or metabolic problem, they are known as acute symptomatic seizures and are in the broader classification of seizure-related disorders rather than epilepsy itself.
Anything that causes epilepsy causes epileptogenesis, because epileptogenesis is the process of developing epilepsy. Structural causes of epilepsy include neurodegenerative diseases , traumatic brain injury , stroke , brain tumor , infections of the central nervous system , and status epilepticus (a prolonged seizure or a series of seizures ...
A seizure is a paroxysmal episode of symptoms or altered behavior arising from abnormal excessive or synchronous brain neuronal activity. [5] A focal onset seizure arises from a biological neural network within one cerebral hemisphere, while a generalized onset seizure arises from within the cerebral hemispheres rapidly involving both hemispheres.
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