Transient global amnesia is a neurological condition characterised by a temporary but total disruption of both short and long term memory. Other cognitive functions are preserved.

Aetiology

The pathophysiology is poorly understood, it may be a form of seizure or migraine-like phenomenon or due to impaired blood flow in the brain.

PC

• It can present with patients being found wandering the street far away from their home.
• The episode may last for several hours before spontaneously resolving.

Management

• No specific action needed
• Patients normally make a full recovery and the phenomenon is unlikely to recur.