coma after a seizure

hi,

i have seen my grandmother have seizures out of the blue and it isn´t a pretty sight, so seizures can happen pretty sudden but always have a cause.
i was just wondering if it possible to fall into coma after a seizure, even if it is for a couple of minutes? In other words, can seizures be strong enough to shake somebody into coma?
or what exactly happens to people´s conscience directly after they have had the siezure?

thank you

[Dr_Aparna]

Hi,
Epilepsy is a common chronic neurological disorder that is characterized by recurrent unprovoked seizures.A seizure, convulsion, or fit is a sudden loss of consciousness, a change in one's state of consciousness, or a loss of control over one's body.
In terms of their origin within the brain, seizures may be described as either partial (focal) or generalized. Partial seizures only involve a localized part of the brain, whereas generalized seizures involve the whole of both hemispheres. The term 'secondary generalisation' may be used to describe a partial seizure that later spreads to the whole of the cortex and becomes generalized.
Whilst most seizures can be neatly split into partial and generalized, there exists some that don't fit. For example: the seizure may be generalized only within one hemisphere. Alternatively there may be many focal points (multifocal seizures) that are distributed in a symmetrical or asymmetrical pattern.
Most forms of epilepsy result in seizures that happen apparently spontaneously and at random.
ref:http://en.wikipedia.org/wiki/Seizure_disorder