Transient loss of consciousness (‘blackouts’) in over 16s

This guideline covers assessment, diagnosis and referral for people over 16 who have had a transient loss of consciousness (TLoC; also called a blackout). It aims to improve care for people with TLoC by specifying the most effective assessments and recommending when to refer to a specialist.

In November 2023, we amended our guidance on assessment and referral for suspected postural hypotension. See update information for further details.

Who is it for?:

1. Healthcare professionals

2. Commissioners and providers

3. People with suspected or diagnosed transient loss of consciousness and their families and carers