epilepsyˈɛp əˌlɛp si
epilepsy (n)
- plural
- epilepsies
English Definitions:
epilepsy (noun)
a disorder of the central nervous system characterized by loss of consciousness and convulsions
epilepsy (Noun)
A medical condition in which the sufferer experiences seizures (or convulsions) and blackouts.
Epilepsy
Epilepsy is a common and diverse set of chronic neurological disorders characterized by seizures. Some definitions of epilepsy require that seizures be recurrent and unprovoked, but others require only a single seizure combined with brain alterations which increase the chance of future seizures. In many cases a cause cannot be identified; however, factors that are associated include brain trauma, strokes, brain cancer, and drug and alcohol misuse among others. Epileptic seizures result from abnormal, excessive or hypersynchronous neuronal activity in the brain. About 50 million people worldwide have epilepsy, and nearly 80% of epilepsy occurs in developing countries. Epilepsy becomes more common as people age. Onset of new cases occurs most frequently in infants and the elderly. As a consequence of brain surgery, epileptic seizures may occur in recovering patients. Epilepsy is usually controlled, but not cured, with medication. However, more than 30% of people with epilepsy do not have seizure control even with the best available medications. Surgery may be considered in difficult cases. Not all epilepsy syndromes are lifelong – some forms are confined to particular stages of childhood. Epilepsy should not be understood as a single disorder, but rather as syndromic with vastly divergent symptoms, all involving episodic abnormal electrical activity in the brain and numerous seizures.
Epilepsy
Epilepsy is a group of non-communicable neurological disorders characterized by recurrent epileptic seizures. An epileptic seizure is the clinical manifestation of an abnormal, excessive, purposeless and synchronized electrical discharge in the brain cells called neurons. The International League against Epilepsy has; in 2005 and again in 2014 published guidelines about the definition of epilepsy for operational purposes. In the past epilepsy was defined as 2 or more unprovoked seizures- with the understanding that this was an enduring condition which would repeat itself. The new definition includes the occurrence two or more seizures separated by 24 hours, or of a single seizure with a chance at recurrence after 2 seizures of greater than 60% in the next 10 years associated with the neurobiologic, cognitive, psychological and social repercussions of this condition( ILAE Fisher et al 2014, 2005) Epileptic seizures can vary from brief and nearly undetectable periods to long periods of vigorous shaking due to abnormal electrical activity in the brain. These episodes can result in physical injuries, either directly such as broken bones or through causing accidents. In epilepsy, seizures tend to recur and may have no immediate underlying cause. Isolated seizures that are provoked by a specific cause such as poisoning are not deemed to represent epilepsy. People with epilepsy may be treated differently in various areas of the world and experience varying degrees of social stigma due to the alarming nature of their symptoms. The underlying mechanism of epileptic seizures is excessive and abnormal neuronal activity in the cortex of the brain which can be observed in the electroencephalogram (EEG) of an individual. The reason this occurs in most cases of epilepsy is unknown (idiopathic); some cases occur as the result of brain injury, stroke, brain tumors, infections of the brain, or birth defects through a process known as epileptogenesis. Known genetic mutations are directly linked to a small proportion of cases. The diagnosis involves ruling out other conditions that might cause similar symptoms, such as fainting, and determining if another cause of seizures is present, such as alcohol withdrawal or electrolyte problems. This may be partly done by imaging the brain and performing blood tests. Epilepsy can often be confirmed with an EEG, but a normal test does not rule out the condition.Epilepsy that occurs as a result of other issues may be preventable. Seizures are controllable with medication in about 69% of cases; inexpensive anti-seizure medications are often available. In those whose seizures do not respond to medication; surgery, neurostimulation or dietary changes may then be considered. Not all cases of epilepsy are lifelong, and many people improve to the point that treatment is no longer needed.As of 2020, about 50 million people have epilepsy. Nearly 80% of cases occur in the developing world. In 2015, it resulted in 125,000 deaths, an increase from 112,000 in 1990. Epilepsy is more common in older people. In the developed world, onset of new cases occurs most frequently in babies and the elderly. In the developing world, onset is more common in older children and young adults due to differences in the frequency of the underlying causes. About 5–10% of people will have an unprovoked seizure by the age of 80, with the chance of experiencing a second seizure rising to between 40% and 50%. In many areas of the world, those with epilepsy either have restrictions placed on their ability to drive or are not permitted to drive until they are free of seizures for a specific length of time. The word epilepsy is from Ancient Greek ἐπιλαμβάνειν, "to seize, possess, or afflict".
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