Types of Seizures More than 30 different seizure types have been
identified. Most of these fall into two major categories: focal
(or partial) seizures and generalized seizures. Focal seizures
occur in just one part of the brain. Generalized seizures are
characterized by abnormal neuronal activity on both sides of the
brain. However, not every seizure falls into one of these types.
Doctors have described more than 30 different seizure types.
Seizures are divided into two major categories -- focal seizures
and generalized seizures; however, there are many different
variations in each of these categories. Focal seizures, also
called partial seizures, occur in just one part of the brain.
About 60 percent of people with epilepsy have focal seizures.
These seizures are frequently described by the area of the brain
in which they originate. For example, someone might be diagnosed
with focal frontal lobe seizures. Two types of focal seizures
are: - Simple focal seizures - Complex focal seizures. Simple
Focal Seizure I