How you have a seizure?

Seizures can happen after a stroke, a closed head injury, an infection such as meningitis or another illness. Many times, though, the cause of a seizure is unknown. Most seizure disorders can be controlled with medication, but management of seizures can still have a significant impact on your daily life.

Explanation:

Seizures of all types are caused by abnormal electrical activity in the brain. Causes of seizures can include: Abnormal levels of sodium or glucose in the blood. Brain infection, including meningitis and encephalitis.

obviously, the latter.