EEG with focal epileptiform discharges

What it means

EEG discharges recorded in particular areas of a localized (focal) abnormality in cerebral electrical activity recorded along the scalp by electroencephalography (EEG).

Note that a focal EEG abnormality is not synonymous with "focal epileptiform discharges" because a focal EEG abnormality is not necessarily epileptiform (e.g., it could be a focal slowing).

Rare diseases that can present with this13

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 EEG Abnormality