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Convulsive seizures (also known as seizures) occur due to increased excitability of a particular group of neurons in a particular area of the brain. As a result of the activity of this group, a “chain reaction” is activated, the excitation covers the adjacent neurons and, ultimately, this “charge” leads to the clinical manifestation of epileptic syndrome – convulsions.
You can find the area of the cortex where such neurons are located using electroencephalography.
There are many reasons why such a pathological group of neurons appears. This may be due to a congenital dysplasia of the nervous tissue, a stroke or the development of a tumor, etc.
It depends on what attacks. There are several types of epileptic seizures. Their severity varies. An attack in which only one part of the brain is to blame is called partial, or focal. If the entire brain suffers, then such a seizure is called generalized. There are mixed seizures: they start with one part of the brain, then cover the entire brain. The following causes of the disease are often found: traumatic brain injury, stroke, brain tumors, lack of oxygen and blood supply at birth, brain disorders (malformations), meningitis, viral and parasitic diseases, brain abscess, hereditary factors.