There are 18.1–39.7<unk> episodes per 1000 people in the general population. Rates are highest between the ages of 10–30 years old. This is likely because of the high rates of vasovagal<unk> in the young adult population. Older adults are more likely to have orthostatic or cardiac<unk> <unk> affects about three to six out of every thousand people each year. It is more common in older people and females. It is the reason for 2–5% of visits to emergency departments and admissions to hospital. Up to half of women over the age of 80 and a third of medical students describe at least one event at some point in their lives.
Syncope 
Epilepsy
Laryngospasm
Seizure
Cornea
Apnea
Bronchospasm
Sleep paralysis