What abnormality can cause localized or lateralized high voltage delta?

Localized or lateralized high voltage delta waves are often associated with specific focal brain abnormalities. In the context of a cerebral abscess, this type of electrical activity can occur due to the localized inflammation and disruption of normal brain function caused by the infection. The presence of an abscess creates a focal area in the brain where the normal electrical activity is altered, leading to the emergence of high voltage delta waves in that region.

High voltage delta activity is typically indicative of a significant disturbance in neuronal function and is not commonly seen in more generalized conditions. While stroke, meningitis, and traumatic brain injuries can produce abnormal EEG findings, they often manifest in broader patterns rather than the distinct localized patterns seen with a cerebral abscess.

This distinction highlights why a cerebral abscess is specifically associated with localized high voltage delta, illustrating how certain conditions can distinctly affect brain rhythms depending on their nature and location.