A transient loss of consciousness and postural tone caused by diminished blood flow to the brain (i.e., BRAIN ISCHEMIA). Presyncope refers to the sensation of lightheadedness and loss of strength that precedes a syncopal event or accompanies an incomplete syncope. (From Adams et al., Principles of Neurology, 6th ed, pp367-9)

Synonyms: Syncope, Stokes Adams, Effort Syncopes, Situational Syncopes, Syncope, Postural, Episode, Syncopal, Fainting, Carotid Sinus Syncopes, Vertigo, Syncopal, Syncopal Vertigo, Syncope, Carotid Sinus, Stokes-Adams Syncope, Drop Attacks, Deglutitional Syncopes, Syncope, Situational, Convulsive Syncope, Syncopal Episodes, Syncopes, Stokes-Adams, Presyncope, Postural Syncopes, Syncope, Stokes-Adams, Syncopes, Micturition Syncope, Micturition Syncopes, Carotid Sinus Syncope, Cardiogenic Syncopes, Tussive Syncopes, Syncope, Tussive, Syncopes, Micturition, Vertigos, Syncopal, Syncopes, Situational, Syncope, Effort, Syncopes, Effort, Syncopes, Convulsive, Postural Syncope, Stokes-Adams Syncopes, Deglutitional Syncope, Hyperventilation Syncopes, Hyperventilation Syncope, Syncope, Convulsive, Syncopal Episode, Syncopes, Tussive, Tussive Syncope, Syncopes, Carotid Sinus, Effort Syncope, Attack, Drop, Syncope, Syncope, Micturition, Syncope, Cardiogenic, Situational Syncope, Syncopes, Postural, Syncopes, Hyperventilation, Cardiogenic Syncope, Presyncopes, Syncope, Hyperventilation, Syncopes, Deglutitional, Syncope, Deglutitional, Drop Attack, Syncopes, Cardiogenic, Convulsive Syncopes