Dizziness preceding syncope is highly associated with a psychological cause (24%) versus syncope without preceding dizziness (5%). Dizziness with syncope can also be associated with arrhythmia.

• 与无头晕性晕厥相比，头晕后晕厥与精神性诱因关联很大，前者占5%25，后者则占24%25。头晕伴晕厥也与心律不齐有关。