Transient global amnesia

Common Name(s)

Transient global amnesia

Transient global amnesia is a sudden, but temporary, episode of memory loss that is not caused by a more common neurological (brain related) condition, such as a stroke or seizure. An affected person typically forgets memories about a recent or current event. For example, a person may not know where they are or how they arrived. It is also common for an affected person to lose track of the current situation, which may cause them to repeat questions that were already answered. The main symptom of transient global amnesia includes sudden memory loss that lasts no more than 24 hours followed by a gradual return of memory.

There is no known cause of transient global amnesia. Common events that are associated with transient global amnesia include exposure to hot or cold water, strenuous physical activity, certain medical procedures (such as angiography and endoscopy), mild head trauma, and emotional distress. Risk factors include age (individuals older than 50 have a greater chance of having transient global amnesia) and a history of migraines. Diagnosis of transient global amnesia depends on an individual’s symptoms while also ruling out more serious causes of memory loss (such as a stroke, seizure or major head injury). Brain imaging (MRI or CT) and evaluation of the brain’s electrical activity (EEG) may be necessary to help rule out these causes. Once a more serious cause of temporary memory loss is ruled out, a doctor will use findings from both a physical and cognitive exam to confirm the diagnosis. There is not a treatment available for transient global amnesia. Fortunately, it is not associated with additional medical or cognitive problems and additional episodes of memory loss are not common.

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Condition Specific Organizations

Following organizations serve the condition "Transient global amnesia" for support, advocacy or research.

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Scientific Literature

Articles from the PubMed Database

Research articles describe the outcome of a single study. They are the published results of original research.
The terms "Transient global amnesia" returned 105 free, full-text research articles on human participants. First 3 results:

Diffusion MRI in transient global amnesia.
 

Author(s): Harikiran Reddy, Keerthiraj Bele, Z K Misri, Santosh P V Rai

Journal: Neurol India. ;62(4):463-5.

 

Last Updated: 20 Sep 2014

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[Transient global amnesia associated to sildenafil and sexual activity].
 

Author(s): Adalbert Marqués-Vilallonga, Santiago Aranda-Rodríguez, Ernesto Trallero-Araguás, Francesc X Jiménez-Moreno

Journal: Rev Neurol. 2014 Jul;59(2):93.

 

Last Updated: 9 Jul 2014

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Transient global amnesia and the risk of ischemic stroke.
 

Author(s): Atul Mangla, Babak B Navi, Kelly Layton, Hooman Kamel

Journal: Stroke. 2014 Feb;45(2):389-93.

 

Whether transient global amnesia (TGA) represents an arterial insult that heralds ischemic stroke remains unclear. Therefore, we examined stroke risk after TGA in a population-based cohort.

Last Updated: 28 Jan 2014

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Reviews from the PubMed Database

Review articles summarize what is currently known about a disease. They discuss research previously published by others.
The terms "Transient global amnesia" returned 7 free, full-text review articles on human participants. First 3 results:

[Transient global amnesia: a review. II. Neurocognitive analysis].
 

Author(s): J M Ruiz-Vargas, E Marín-García

Journal: Rev Neurol. ;46(2):115-22.

 

Transient global amnesia (TGA) is a neuropsychological syndrome characterized by an abrupt and temporary loss of capacity of creating new memories and whose etiology is still unclear. AIM. To review available knowledge about the status of different memory systems when TGA is suffered ...

Last Updated: 5 Feb 2008

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[Transient global amnesia: a review. I. Clinical aspects].
 

Author(s): E Marín-Garcia, J M Ruiz-Vargas

Journal: Rev Neurol. ;46(1):53-60.

 

Transient global amnesia (TGA) is a neuropsychological syndrome in which a sudden, temporary loss of the capacity of creating new memories and a retrograde amnesia of variable intensity occur, whereas consciousness, personal identity and attention are preserved.

Last Updated: 24 Jan 2008

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Classical diseases revisited: transient global amnesia.
 

Author(s): D Owen, B Paranandi, R Sivakumar, M Seevaratnam

Journal: Postgrad Med J. 2007 Apr;83(978):236-9.

 

Transient global amnesia usually affects patients between the ages of 40 and 80. Patients with this condition are often described--wrongly--as being confused. It presents classically with an abrupt onset of severe anterograde amnesia. It is usually accompanied by repetitive questioning. ...

Last Updated: 3 Apr 2007

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Symptoms, Diagnosis, and Treatment

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Clinical Trial Information This information is provided by ClinicalTrials.gov

Last Updated: 28 Aug 2014

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