Seizures | Generalized vs Focal Seizures | Causes of Seizures
"...seizures are defined as a transient occurrence of signs and symptoms due to abnormally excessive or synchronous neuronal activity in the brain they are classified into several types the first thing to consider is where the seizure originated in the brain generalized seizures begin involving both hemispheres of the brain previously they were known as primary General seizures on the other hand focal seizures originate from an area on one hemisphere if seizures begin on one Hemisphere and then involve both they known as focal to bilateral seizures this was previously called secondarily generalized seizures the next factor is whether or not the patient keeps their awareness the seizure generalized seizures are automatically considered to affect awareness, therefore, this distinction only applies to focal seizures meaning you either have focal away previously known as simple partial or focal impaired awareness previously complex partial then we have motor or non-motor seizures motor implies the involvement of movement during The Siege generalized seizures May feature stiffening and jerking while focal seizures can have movements such as twitching jerking and stiffening too but they may also feature automatic movements like licking lips or rubbing hands in focal seizures initially one group of muscles may be affected but this abnormal movement can later spread or move to other muscle this occurs due to the abnormal neuronal activity in the brain also moving to a different area this is known as the Jacksonian March generalized non-motor seizures and mostly known as absence seizures were primarily individuals will have changes in awareness and stay focal know look to seizures typically have other symptoms that happen first previously known as an aura this could be changes in sensation in Emotion thinking or there are six main types of generalized seizure the most well-known is the tonic clonic seizure previously known as grand mal here the seizures present contraction of the limbs followed by limb extension and arching of the back usually lasting 10 to 30 seconds at this stage you may also hear what is known as the it cry which is a sound produced due to the contraction of the chest muscles following this the limbs May begin shaking and in total a tonic-clonic would last around two to three minutes atonic seizures as the name suggests present with increased tonicity meaning a sustained contraction similar to the start of the tonic-clonic..."
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