Tonic Seizure In a tonic seizure, muscle tone greatly increases, causing the body, arms, or legs to make sudden stiffening movements. A child having a tonic seizure usually stays conscious during the seizure, which typically lasts less than 20 seconds. Tonic seizures most often occur during sleep and usually involve all or most of the brain, affecting both sides of the body.
There are many causes of epilepsy. Generally, the causes of epilepsy can be classified into three broad categories: Often, these are the genes that control the excitability of nerve cells neurons in the brain.
However, many people with genetic mutations may never develop epilepsy. Experts believe that, in many cases, genetic predisposition combined with environmental conditions lead to epilepsy.
About 30 to 40 percent of epilepsy is caused by genetic predisposition. First-degree relatives of people with inherited epilepsy have a two- to four-fold increased risk for epilepsy.
Although there is some increased risk, it is important to remember that the overall risk of epilepsy in other family members is still low.
Cryptogenic Epilepsy In about half of all cases of epilepsy, doctors are unable to pinpoint an exact, identifiable cause. That means the cause is hidden. Other Causes of Epilepsy Head trauma: Some people develop epilepsy after a car accident or other traumatic head injury.
Brain conditions, such as vascular malformations, brain tumors and strokes, can damage the brain.
That brain damage can cause epilepsy. Damage from a stroke is the leading cause of epilepsy in adults over the age of Certain factors can lead to brain damage that can result in epilepsy or other conditions like cerebral palsy. Some of these factors are oxygen deficiencies, poor nutrition and infection in the mother.
Some people with developmental disorders, like autism or neurofibromatosis NFalso have epilepsy.Epilepsy causes. Epilepsy is caused by irregular brain activity and can develop at any age. Some people are born with a defect in the structure of their brain.
Others have had a head injury, tumor, stroke, or an infection causing epilepsy.
An epileptic seizure might not occur until years after the injury, but in all cases, a seizure is the common symptom. Epilepsy is a general term for the tendency to have seizures. Epilepsy is usually diagnosed only after a person has had more than one seizure..
When identifiable, the causes of epilepsy usually. Any type of epileptic seizure can progress to status epilepticus, but convulsive status has the greatest potential for long-term damage. Nonconvulsive status includes continuous absence seizures and partial status epilepticus, including status involving simple partial seizures (called epilepsia partialis continua).
Learn what types and patterns of light can trigger seizures for a person who has the rare condition known as photosensitive epilepsy.
Currently, the World Health Organization estimates that approximately 50 million people have epilepsy, a chronic condition that ranks as one of the most common neurological conditions.
Nonepileptic seizures are episodes that briefly change a person’s behavior and often look like epileptic seizures.
The person having nonepileptic seizures may have internal sensations that resemble those felt during an epileptic seizure. The Skillnet Group has written this easy to read article about epilepsy, the causes and types of epilepsy and what you should do if someone has epilepsy, in the hope of raising awareness and understanding about epileptic seizures.