The initial consultation consists of a careful history and examination and an ECG.
The diagnosis may become clear at this stage, for example:
- vasovagal syncope:
- occurs after pain or unpleasant site or smell
 - after prolonged standing
 
 - orthostatic syncope
- occurs when the patient stands up
 
 - heart block:
- past history of ischaemic or congenital heart disease
 
 - situational syncope:
- events occur after micturition, defecation, coughing or swallowing
 
 - drug-induced syncope:
- the patient is taking drugs which prolong the QT interval
 
 - neurally mediated syncope with neuralgia:
- events associated with throat or facial pain
 
 - syncope associated with other significant cardiovascular disease
 - syncope with a family history of sudden cardiac death:
- Long QT syndrome
 - Brugada syndrome
 
 - subclavian steal:
- syncope is associated with work with the arms
 
 - frequent unexplained syncope with somatic symptoms: