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Interictal EEG abnormality

MedGen UID:
1377364
Concept ID:
C4476738
Finding
HPO: HP:0025373

Definition

Interictal refers to a period of time between epileptic seizures. Electroencephalographic (EEG) patterns are important in the differential diagnosis of epilepsy, and the EEG is almost always abnormal during a seizure. Some persons with seizures may show EEG abnormalities between seizures, while others do not. In some cases, multiple interictal EEGs must be recorded before an abnormality is observed. In most cases the electrographic pattern of seizure onset is completely different from the activity recorded during interictal discharge. [from HPO]

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • Interictal EEG abnormality

Professional guidelines

PubMed

Montouris G, Aboumatar S, Burdette D, Kothare S, Kuzniecky R, Rosenfeld W, Chung S
Epilepsy Behav 2020 Sep;110:107146. Epub 2020 Jun 18 doi: 10.1016/j.yebeh.2020.107146. PMID: 32563898
Xu MY
Stroke Vasc Neurol 2019 Mar;4(1):48-56. Epub 2018 Dec 9 doi: 10.1136/svn-2018-000175. PMID: 31105979Free PMC Article
Reynolds AS, Claassen J
Semin Neurol 2017 Feb;37(1):33-39. Epub 2017 Feb 1 doi: 10.1055/s-0036-1593862. PMID: 28147416

Recent clinical studies

Etiology

Arvio M, Oksanen V, Autio S, Gaily E, Sainio K
Acta Neurol Scand 1993 May;87(5):342-4. doi: 10.1111/j.1600-0404.1993.tb04114.x. PMID: 8333236

Diagnosis

Quesney LF, Gloor P
Electroencephalogr Clin Neurophysiol Suppl 1985;37:165-200. PMID: 3924559
Pedley TA, Tharp BR, Herman K
Ann Neurol 1981 Feb;9(2):142-9. doi: 10.1002/ana.410090207. PMID: 6786207

Therapy

Arvio M, Oksanen V, Autio S, Gaily E, Sainio K
Acta Neurol Scand 1993 May;87(5):342-4. doi: 10.1111/j.1600-0404.1993.tb04114.x. PMID: 8333236

Prognosis

Arvio M, Oksanen V, Autio S, Gaily E, Sainio K
Acta Neurol Scand 1993 May;87(5):342-4. doi: 10.1111/j.1600-0404.1993.tb04114.x. PMID: 8333236
Pedley TA, Tharp BR, Herman K
Ann Neurol 1981 Feb;9(2):142-9. doi: 10.1002/ana.410090207. PMID: 6786207

Clinical prediction guides

Pedley TA, Tharp BR, Herman K
Ann Neurol 1981 Feb;9(2):142-9. doi: 10.1002/ana.410090207. PMID: 6786207

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