from Section 2 - The Spectrum of Epilepsies Involving the Insula
Published online by Cambridge University Press: 09 June 2022
Painful epileptic seizures are scarce and can be a diagnostic challenge, as they may occur as the sole manifestation of seizures. Three categories are distinguished: (1) ictal epileptic headache; (2) ictal abdominal pain; and (3) painful somatosensory seizures, during which patients complain of acute and intense pain affecting part of the body. According to the intracranial EEG recordings, the insulo-opercular cortex and the mesial temporal lobe are implicated in the occurrence of ictal epileptic headache. Such is the case for ictal abdominal pain with the addition of the anterior cingulate gyrus. Stereo-electroencephalography data strongly suggest that painful somatosensory seizures originate in the posterior insula and the secondary sensory area. While ictal epileptic headache and painful abdominal seizures may correspond to an autonomic response resulting from the activation of a central autonomic network, painful somatosensory seizures result from the activation of a central pain network (i.e., the Pain Matrix or Salient Matrix).
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