Transient Global Amnesia - Diagnosis
Transient global amnesia (TGA) is a syndrome of amnesia where there is a brief loss of the ability to form new memories and to recall recent events. It usually lasts for no more than a few hours.
A diagnosis of TGA requires:
- Clear loss of the ability to form new memories which resolve within a 24 hour period during the attack
- Epileptic symptoms must be absent and patients with recent head injury or active epilepsy are excluded