Epilepsy

Sometimes the brain has a sudden burst of energy.

This can make a person's body shake. It might also make them feel very sleepy. Some people may even fall down.

This can happen for many reasons. It can happen because of an injury to the head. Doctors use medicine to help. This helps people stay safe. Many people live happy lives. Some people wear a bracelet to show they have this.

This helps others know how to help them.

Epilepsy is a group of brain disorders. It causes a person to have seizures. A seizure is a sudden burst of electrical activity in the brain.

Seizures can look different for everyone. Some people might just have brief lapses in awareness. Others might have muscle jerks or long shakes.

Doctors group seizures into four main classes. Focal seizures start in just one part of the brain. Generalized seizures spread quickly across both sides of the brain. Some seizures are called absence seizures. These cause a person to stop paying attention for a short time.

Many things can cause epilepsy. It can come from brain injuries or strokes. It can also come from infections or tumors. Sometimes, doctors do not know the cause.

Most people can control their seizures. About 69% of people use anti-seizure medicines. If medicine does not work, doctors might try surgery or diet changes. Many people improve and no longer need treatment. About 50 million people in the world have epilepsy.

Epilepsy is a group of brain disorders that cause a person to have seizures. A seizure is a sudden burst of abnormal electrical activity in the brain.

These episodes can cause many different symptoms. Some people might only have brief lapses in awareness. Others may experience muscle jerks or long convulsions. These events can sometimes lead to physical injuries like broken bones. A person is usually diagnosed with epilepsy after having two unprovoked seizures. These seizures must happen more than 24 hours apart.

Seizures work in different ways depending on where they start in the brain. The International League Against Epilepsy (ILAE) groups them into four main classes. Focal seizures start in just one area of the brain. These may involve localized networks or spread to nearby areas. A person might stay aware during a focal seizure. They might also experience an aura, which is a warning feeling.

Generalized seizures are different because they spread quickly across both sides of the brain. These usually make a person lose consciousness right away. They can include tonic-clonic seizures, which involve stiffening and jerking. There are also absence seizures that cause brief lapses in attention.

Doctors have studied these brain patterns for a very long time. The word epilepsy comes from Ancient Greek words meaning to seize or afflict.

Early thinkers like Hippocrates studied these conditions long ago. Today, doctors use many tools to find the cause of seizures. They use neuroimaging and blood tests to check the brain. They also use an EEG, which is a test that records electrical activity. This helps them rule out other conditions that look like seizures. Knowing the cause helps doctors choose the right way to help.

Many different things can cause epilepsy to happen. It can result from brain injuries, strokes, or infections. Tumors and genetic conditions are also common causes. In about 50% of cases, the cause remains unknown. Around 50 million people worldwide live with epilepsy today. Nearly 80% of these cases occur in low- and middle-income countries. In 2021, epilepsy was responsible for about 140,000 deaths. This is an increase from 125,000 deaths recorded in 1990. Epilepsy is most common in both children and older adults.

Living with epilepsy can be a hard job, but there is much help available. About 69% of people can control their seizures with medicine. These anti-seizure medications are often inexpensive and easy to find. If medicine does not work, doctors might suggest surgery or dietary changes. Some people even use neurostimulation to help their brains. Not all cases of epilepsy last a lifetime. Many people improve so much that they no longer need treatment. People may also wear medical alert bracelets to stay safe. This helps others know how to react if a seizure happens.

Epilepsy is a complex group of neurological disorders. It is defined by a tendency to experience recurrent, unprovoked seizures. A seizure is a sudden burst of abnormal electrical activity in the brain.

These electrical bursts can cause many different symptoms. Some people experience brief lapses in awareness or simple muscle jerks. Others may undergo prolonged convulsions. These episodes can lead to physical injuries like broken bones. They can also cause accidents through loss of control. A diagnosis of epilepsy usually requires at least two unprovoked seizures. These seizures must occur more than 24 hours apart. In some cases, one seizure is enough for a diagnosis if the risk of recurrence is high.

Seizures function through different electrical pathways in the brain. The International League Against Epilepsy (ILAE) classifies them into four main groups. Focal seizures originate in one specific area of the brain. These may involve localized networks or spread to nearby regions. A person might experience a focal seizure with preserved consciousness. This means they remain aware and responsive during the event. Some focal seizures involve impaired consciousness, where awareness is lost. These may be preceded by an aura, which is a warning sensation.

Focal seizures can also include sensory, psychic, or motor phenomena. For example, a Jacksonian march occurs when muscle jerks spread to surrounding groups.

Generalized seizures follow a different mechanism of action. These seizures originate at a specific point but spread quickly across both hemispheres. This spread happens through interconnected brain networks. Most generalized seizures impair consciousness from the very beginning. One common type is the generalized tonic-clonic seizure. This involves a tonic phase of stiffening followed by a clonic phase of rhythmic jerking.

Another type is the absence seizure, which causes brief lapses in awareness. These may involve eye blinking or subtle head turning. Other types include myoclonic seizures, which cause brief muscle jerks. Atonic seizures involve a sudden loss of muscle tone, often causing falls.

Many different factors can cause these electrical disruptions. The ILAE classifies causes into six broad categories. These include structural, genetic, infectious, metabolic, immune, and unknown causes. Structural causes involve physical abnormalities in the brain anatomy. These can be acquired from strokes, brain tumors, or traumatic brain injuries. They can also be developmental or genetic in origin. For instance, mesial temporal sclerosis is a common structural cause. Genetic conditions are more frequent in children. Conversely, strokes and tumors are more common in older adults. In approximately 50% of cases, no clear cause is identified.

History shows that humans have studied these patterns for centuries. The word epilepsy comes from Ancient Greek. It means "to seize, possess, or afflict."

Early thinkers like Hippocrates documented these conditions long ago. Today, doctors use advanced tools to understand the brain. They use neuroimaging and blood tests to rule out other conditions. Electroencephalography, or EEG, is a vital tool.

An EEG records the electrical activity of the brain. This helps doctors see the patterns of the seizures. This scientific approach allows for much more precise diagnoses than in the past.

Epilepsy has a massive global impact. Approximately 50 million people worldwide live with the condition. Nearly 80% of these cases occur in low- and middle-income countries. The burden in low-income countries is more than twice that of high-income countries. This is likely due to higher exposure to risks like infections and brain injuries. It is also due to limited access to healthcare. In 2021, epilepsy was responsible for an estimated 140,000 deaths. This is an increase from 125,000 deaths in 1990. About 5% to 10% of people will have an unprovoked seizure by age 80.

Managing epilepsy involves various medical and social considerations. About 69% of cases can be controlled with anti-seizure medications. These medications are often inexpensive and widely available. If drugs do not work, doctors may suggest surgery or neurostimulation. Dietary changes are another option for some patients. People may also wear medical alert bracelets for safety.

Living with epilepsy can also affect mental health. About one-in-three people with epilepsy have a history of a psychiatric disorder. This includes conditions like depression, anxiety, and ADHD. These challenges can lead to social stigma or functional disability. However, many people improve so much that they no longer need treatment.