Focal hemifacial clonic seizure

What it means

Focal seizure characterized at onset by clonic movements affecting half of the face.

A seizure type typically occurring in childhood epilepsy with centrotemporal spikes.

Rare diseases that can present with this2

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Hemifacial seizures