Seizures originating in the frontal lobe can resemble absence seizures with minimal motor involvement (37). The patient has altered consciousness but may partially respond to his environment. These seizures may last for extended periods, representing a form of nonconvulsive status epilepticus. They have been associated with mesial-frontal (14) as well as frontopolar seizure onset (37).
These seizures can be clinically indistinguishable from dissociative episodes or alteration of consciousness due to psychiatric disease. However, during frontal lobe absence seizures usually obvious EEG changes occur, which are clearly epileptiform in the form of irregular diffuse sharp slow complexes (38). This again stresses the necessity of video-EEG monitoring to assure the correct diagnosis.
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