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Transient Global Amnesia

Medically reviewed by Last updated on Jun 5, 2024.

What is transient global amnesia?

Transient global amnesia (TGA) is a sudden, temporary loss of memory. You may not be able to remember information or experiences from the recent past, or remember new information. For example, you may not know where you are or how you got there. You may not remember information you are told, and you may repeat the same questions. Your memory usually returns within 24 hours.

What causes TGA and what other symptoms may occur ?

The cause of TGA is unknown. TGA may be triggered by a stressful condition such as extreme heat, cold, shock, fright, or intense physical activity. You may have other symptoms such as a headache, dizziness, or nausea.

How is transient global amnesia diagnosed?

Your healthcare provider will ask you or someone close to you about any medical conditions you have or medicines you take. He or she will also ask questions about your memory loss, and if you have any other symptoms. You may need any of the following:

How is TGA treated?

There is no treatment needed for TGA. TGA usually does not cause permanent memory problems. Your risk of having another episode of TGA is low.

When should I contact my healthcare provider?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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