Seizures happen when your brain cells, which communicate through electrical signals, send out the wrong signals. Having just one seizure doesn't mean you have epilepsy. Generally, several seizures are needed before there is a diagnosis of epilepsy.
Epilepsy can happen at any age, but it is most common in the elderly. Many children with epilepsy outgrow the condition. However, even mild seizures that happen more than once should be treated, because they could cause harm if they happen while you are driving, walking, or swimming, for example.

This video speaks about the six most commonly test seizure disorders tested on the board exam:

-Status Epilepticus
-Tonic Clonic