Hence, all the reported cases of tumour-related TGA might in fact be instances of TEA. In the absence of recurrent episodes, risk factors for seizures (such as a prior stroke), or a history suggestive of epileptic activity, it is not necessary to. These features - short duration of symptoms (<2 h), stereotyped semiology, and high recurrence rate - are all typical of TEA as opposed to TGA. Alternatively, it is recognised that a subset of ‘pure TGA' patients, largely identifiable because of atypically brief or recurrent attacks, develop epilepsy and/or respond to antiepileptic medication. In other words, the tumour might lower the threshold for the clinical manifestation of vascular and/or epileptiform events. Such localised neoplastic lesions might result in abnormal electrical activity within medial temporal lobe networks, hence producing TEA-like events, and also compromise medial temporal lobe blood supply, for example in association with exercise, and hence predispose to typical TGA-like events. found an epileptic basis for a small proportion of cases (7 of 153) and the term ‘transient epileptic amnesia’ was coined (Reference Kapur and. In some cases, the finding of a tumour is unlikely to be any more than chance concurrence, based on tumour location distant from memory-eloquent structures, whereas other tumour locations are more obviously of possible pathophysiological relevance. These are the words, during treatment, of a 62-year-old man who collapsed at work with a transient right-sided weakness and a complete loss of autobiographical memory. The operation was successful in that my memory improved. As I have written elsewhere on this site, I was treated surgically for a large, subarachnoid cyst (in the velum interpositum) in the summer of 2017.

What is the clinical significance of these reports of TGA and brain tumour? Some reports fail to meet the clinical criteria for TGA whereas others have features which might be more in keeping with TEA. Transient Global Amnesia and its treatment.

Transient epileptic amnesia treatment