Temporal lobe seizure
Temporal lobe seizure
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Temporal lobe seizures begin in the temporal lobes of your brain, which process emotions and are important for short-term memory. Some symptoms of a temporal lobe seizure may be related to these functions, including having odd feelings — such as euphoria, deja vu or fear.
Temporal lobe seizures are sometimes called focal seizures with impaired awareness. Some people remain aware of what’s happening, but during more-intense seizures, you might look awake but be unresponsive. Your lips and hands may make purposeless, repetitive movements.
Temporal lobe seizures may stem from an anatomical defect or scar in your temporal lobe, but the cause is often unknown. Temporal lobe seizures are treated with medication. For some people who don’t respond to medication, surgery may be an option.
An unusual sensation (aura) may precede a temporal lobe seizure, acting as a warning. Not everyone who has temporal lobe seizures has auras, and not everyone who has auras remembers them.
The aura is actually the first part of a focal seizure before consciousness is impaired. Examples of auras include:
Sometimes temporal lobe seizures impair your ability to respond to others. This type of temporal lobe seizure usually lasts 30 seconds to two minutes. Characteristic signs and symptoms include:
After a temporal lobe seizure, you may have:
In extreme cases, what starts as a temporal lobe seizure evolves into a generalized tonic-clonic (grand mal) seizure — featuring convulsions and loss of consciousness.
Seek immediate medical help if any of the following occurs:
If you experience a seizure for the first time, seek medical advice.
Seek medical advice in these circumstances:
Each side of your brain contains four lobes. The frontal lobe is important for cognitive functions and control of voluntary movement or activity. The parietal lobe processes information about temperature, taste, touch and movement, while the occipital lobe is primarily responsible for vision. The temporal lobe processes memories, integrating them with sensations of taste, sound, sight and touch.
Often, the cause of temporal lobe seizures remains unknown. However, they can be a result of a number of factors, including:
During normal waking and sleeping, your brain cells produce varying electrical activity. If the electrical activity in many brain cells becomes abnormally synchronized, a convulsion or seizure may occur.
If this happens in just one area of the brain, the result is a focal seizure. A temporal lobe seizure is a focal seizure that originates in one of the temporal lobes.
Over time, repeated temporal lobe seizures can cause the part of the brain that’s responsible for learning and memory (hippocampus) to shrink. Brain cell loss in this area may cause memory problems.
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Temporal lobe seizure
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