I have had fainting in night do not know how I got on floor and can not see when I come too total darkness for maybe half hour and disoriented

Hello. Thank you for your message.

Fainting is a sudden loss of consciousness, usually temporary and typically caused by a lack of oxygen in the brain. The brain oxygen deprivation has many possible causes, including hypotension (low blood pressure). If this happens again or if you are concerned that it might happen again, see your doctor.

Helena