Which term describes a seizure that affects only one area of the brain?

• A. Generalized Seizure
• B. Focal Seizure
• C. Hemiplegia
• D. Aphasia

Answer: (B)

Seizures are classified by where in the brain they begin. When the electrical disturbance stays in a single region, it’s called a focal seizure. This means one area of the brain is affected, and the symptoms reflect that region—such as localized movements, sensory changes, or altered awareness depending on which area is involved. The seizure may stay localized or spread to other parts of the brain and become generalized, but the defining feature is its origin in one area.

Generalized seizures involve both hemispheres from the onset and typically affect consciousness and bilateral motor function. Hemiplegia describes weakness on one side of the body and is not a type of seizure. Aphasia is a language impairment and also not a seizure type.