<unk>  is defined as abrupt, transient complete loss of consciousness, inability to keep postural tone, rapid spontaneous recovery with the mechanism of cerebral hypoperfusion.<unk>  is usually classified based on the underlying mechanisms leading to hypoperfusion.<unk>  is classified to reflex-mediated, orthostatic hypotension, and cardiovascular subtypes. Neurally-mediated<unk>  (common faint) is the most common type of reflex<unk>   in younger patients occurs during upright position (standing, sitting)  with prodrome symptoms including diaphoresis, warmth, nausea, and pallor, usually  after emotional stress, pain, medical setting. Orthostasis hypotension is explained as reduction in systolic blood pressure of  ≥20 mmHg or diastolic blood pressure of ≥10 mm Hg within 3 minutes of standing position and is common in older patients. Carotid sinus syndrome which is a type of   reflex<unk>  due to carotid sinus hypersensitivity  is defined as  pause ≥3 seconds and/or a reduction of systolic blood  pressure ≥50 mm Hg during  stimulation of the carotid sinus and  is more common in older patients. There are some conditions that are incorrectly diagnosed as<unk> . These conditions are usually associated with partial or complete loss of consciousness such as epilepsy, metabolic disorders, transient ischemic attack or conditions with loss of posture and without loss of consciousness like cataplexy, drop attacks, falls and pseudo-syncope.
Syncope classification
Dizziness classification
Amnesia classification
Headache classification
Chest pain classification
Bradycardia classification
Ischemic stroke classification
Anxiety classification