The goal of this observational study is to examine the clinical presentations, the diagnostic tests performed and the management of patients presenting with transient loss of consciousness (TLOC)

The main questions it aims to answer are:

• prevalence of TLOC
• prevalence of different diagnoses leading to TLOC Demographic, clinical, paraclinical and biological data will be collected from the emergency medical file

Patients over the age of 18 presenting to the University Hospital of Clermont-Ferrand emergency department for transient loss of consciousness of syncopal or undifferentiated origin will be include. Their non-opposition will be sought.

Demographic, clinical, paraclinical and biological data will be collected from the emergency medical file.

No visit is planned after the passage to the emergency room.

Inclusion Criteria:

• patients over 18 presenting to the Clermont-Ferrand University Hospital emergency department for transient loss of consciousness of syncopal or undifferentiated origin

Exclusion Criteria:

• N/A

All adult patients presenting to the emergency room of the CHU de Clermont-Ferrand with a transient loss of consciousness of syncopal or undifferentiated origin will be included once the non-objection has been collected.