These seizures are caused by sudden and/or temporary disruption in the way that messages are passed between the brain cells. The brain is made up of complex networks of brain cells. Each network has its own function; different networks are responsible for movement and for the senses of smell, touch and sight, for example. The cells in these networks communicate with each other through electrical impulses.
An epileptic seizure is the result of a short circuit in one or more of these networks. There are many different kinds of epilepsy. The symptoms of a seizure depend on the severity of the short circuit and where in the brain it occurs. So when is it epilepsy? Epilepsy is characterised by regular seizures caused by a short circuit in the brain.