title: EEG abnormalities in patients with atypical panic attacks.
abstract: BACKGROUND
  Panic attacks and certain partial seizures have phenomenologic similarities which suggest that they may somehow be related. No evidence of such a relationship, however, was found when the routine EEGs of patients with panic attacks were examined.
  
  
  METHODS
  Fifteen subjects with atypical panic attacks who met DSM-III-R criteria for panic disorder agreed to have routine followed by prolonged ambulatory EEG monitoring with sphenoidal electrodes. Fourteen subjects actually underwent monitoring; 1 had a panic attack during premonitoring routine EEG.
  
  
  RESULTS
  Focal paroxysmal EEG changes consistent with partial seizure activity occurred during panic attacks in 33% (N = 5) of the 15 subjects; 2 (40%) of the 5 subjects with panic-related EEG changes had normal routine EEGs. Multiple attacks were recorded before panic-related EEG changes were demonstrated in several subjects.
  
  
  CONCLUSIONS
  It may be necessary to monitor the EEG during multiple panic attacks to reveal an association between atypical panic attacks and epileptiform EEG changes.
authors.affiliation: Department of Psychiatry, Massachusetts General Hospital, Boston 02114, USA.
authors.forename: J B
authors.initials: JB
authors.lastname: Weilburg
authors.forename: S
authors.initials: S
authors.lastname: Schachter
authors.forename: J
authors.initials: J
authors.lastname: Worth
authors.forename: M H
authors.initials: MH
authors.lastname: Pollack
authors.forename: G S
authors.initials: GS
authors.lastname: Sachs
authors.forename: J R
authors.initials: JR
authors.lastname: Ives
authors.forename: D L
authors.initials: DL
authors.lastname: Schomer
mesh_terms: D000328:Adult; D001921:Brain / Q000503:physiopathology; D003937:Diagnosis, Differential; D004569:Electroencephalography; D004828:Epilepsies, Partial / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory; D016584:Panic Disorder / Q000175:diagnosis* / Q000503:physiopathology; D010865:Pilot Projects; D011569:Psychiatric Status Rating Scales