Focal tonic seizure

What it means

A type of focal motor seizure characterized by sustained increase in muscle contraction, lasting a few seconds to minutes.

The abnormal movements of dystonia resulting from co-contraction of agonist and antagonist muscles differentiates these from tonic seizures, see focal dystonic seizure.

Rare diseases that can present with this7

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: Focal tonic seizures · Local tonic seizures · Localised tonic seizure · Localized tonic seizure · Partial tonic seizure · Partial tonic seizures · Segmental tonic seizure