The description 'begins in one extremity' BEST describes which type of seizure?

• A. Grand Mal Seizure
• B. Atonic Seizure
• C. Simple Partial Seizure
• D. Tonic Clonic Seizure

Answer: (C)

Onset pattern and preserved awareness are key. Beginning in one extremity points to a focal onset, meaning the seizure starts in a specific region of the brain that controls that limb. When awareness remains intact during the event, this is a simple partial seizure (focal aware seizure). Motor symptoms may start as twitching or jerking in a hand or arm and can even march along the motor cortex in a Jacksonian pattern as the activity spreads, all while the person stays conscious.

The other options describe generalized or abrupt loss of muscle tone: atonic seizures involve sudden loss of tone and falls; generalized tonic-clonic seizures start with a loss of consciousness and involve stiffening (tonic) followed by jerking (clonic) of the whole body, which is not limited to one extremity. Thus, the description aligns with a simple partial seizure.