Multiple auras

Abstract

Most patients who report multiple aura types have localized epilepsy in the nondominant hemisphere, and are good surgical candidates. A common mechanism for multiple auras may be a spreading but restricted EEG seizure activating sequential symptomatogenic zones, but without the ictal activation of deeper structures or contralateral spread to cause loss of awareness and amnesia for the auras.

Reply to ‘Comment on “Olfactory hallucinations as a manifestation of hidden rhinosinusitis”’

“…There are numerous recognised causes of olfactory hallucinations, 7,8 and this report increases the spectrum of the causes of olfactory hallucinations. Moreover, it supports the hypothesis that phantosmias may represent the consequence of hyperstimulation of the neural pool of the fronto-basal regions, which are critical areas in the perception and the central elaboration of olfactory stimuli.…”

Auras as a prognostic factor in anterior temporal lobe resections for mesial temporal sclerosis

“…Widdess‐Walsh et al . found a multiple aura prevalence of 0.4% in patients submitted to video‐electroencephalography. However, in these centers, medication is usually discontinued to provoke seizures, which may favor generalized seizures, making it difficult to identify the auras.…”

“…Patients with partial epilepsy may report multiple types of aura during their seizures and the significance of the occurrence of multiple auras in the same patient is not known . This study aimed to correlate the types of aura and their anatomical localizations with the post‐operative prognosis of patients after corticoamygdalohippocampectomy.…”

“…An aura or multiple auras has different prevalence in the literature ranging from 0.4% to 60%, varying according to the methods used to identify them . Widdess‐Walsh et al .…”

Seizure Semiology: An Overview of the ‘Inverse Problem’

“…Although patients reporting several different experiences preceding a loss of consciousness may raise concerns about possible nonepileptic seizures, the pattern of multiple auras was recently observed in 0.4% of subjects undergoing long-term EEG monitoring [19]. Interestingly, a strong predominance of nondominant hemispheric lateralization was found, mostly involving the temporal or posterior regions, probably leading to more accurate reporting following the relative preservation of language in these cases.…”