EEG with generalized slow activity

What it means

Diffuse slowing of cerebral electrical activity recorded along the scalp by electroencephalography (EEG).

Generalized slow activity in the EEG typically signifies serious dysfunction of the entire brain.

Rare diseases that can present with this14

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: EEG with generalised slow activity · EEG: generalised slow activity · EEG: generalized slow activity