Different kinds of seizures result when different parts of the brain are affected. If electrical activity increases in only one area of the brain, the person will have what doctors call a partial seizure. Many times, people may suffer a partial seizure and not know it. They might note strange feelings in an arm or leg. They also might hear noises or look straight ahead for a few minutes.
Sometimes the individual will have an uncontrolled movement, like turning the head to one side. Most partial seizures last less than 90 seconds. So it is not always possible for others to recognize them as signs of a disorder.
When people hear the word seizure, they often think of what doctors call a grand mal seizure. A person experiencing this kind of seizure will fall to the ground. His or her body will become firm and start to shake. After a few minutes, the individual will stop moving, appear awake and know what has happened. He or she may move slowly for about 30 minutes. Some grand mal seizures start with partial seizures and become worse.
Experts have reported different reasons why an individual may suffer epileptic seizures. For example, older adults may develop epilepsy because of an infection, stroke, or Alzheimer's disease. Head injuries or a lack of oxygen at birth may damage the electrical system in the brain. Other causes are poisoning and high body temperatures.
In early 2012, researchers in Australia reported finding a genetic cause for epilepsy in babies. Researchers from the University of South Australia and the University of Melbourne studied 23 families. Earlier testing showed they all had one or more family members with a condition called benign familial infantile epilepsy.
最新
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25