Tilt-induced vasovagal syncope and psychogenic pseudosyncope: Overlapping clinical entities.

Objective: To describe the combination of tilt-induced vasovagal syncope (VVS) and psychogenic pseudosyncope (PPS) and aid its clinical recognition.

Methods: We identified people with tilt-induced VVS/PPS from 2 tertiary syncope referral centers. For each case, 3 controls with tilt-induced VVS were selected at random from the same center.