A focal cognitive seizure involves an alteration in a cognitive function (which can be a deficit or a positive phenomenon such as forced thought), which occurs at seizure onset. To be classified as a focal cognitive seizure, the change in cognitive function should be specific and out of proportion to other relatively unimpaired aspects of cognition, because all cognition is impaired in a focal impaired awareness seizure. [PMID:28276060, PMID:28276064]
