What causes someone to fall blackout and start shaking?

Answer 1

The symptoms you describe sound like a seizure or fit. This may be caused by epilepsy, a head injury, drug (mis)use, excess alcohol, stress, sleep deprivation or poisoning amongst other things.

EMERGENCY ASSISTANCE SHOULD BE SOUGHT IN THE FOLLOWING CIRCUMSTANCES:

• The seizure lasts for longer than five minutes
• If the person does not regain consciousness after the seizure
• If the person has a second seizure without regaining consciousness from the first
• If it is a person whom you know has never had a seizure before
• If they injure themselves during the seizure
• Or if you believe the person needs urgent medical attention.

You should not try to restrain someone who is undergoing a seizure and you must not try to place anything in their mouth. You should not attempt to move them unless they are in a position where they may be in danger (such as in or near a road).

It is however recommended that you cushion their head (if they are on the ground), loosen any tight clothing, especially around the neck, remove any objects from the area that the person may injure themselves on and that once the seizure has finished you lay them on their side and ideally place them in the recovery position. It is also recommended that you stay with the person until they have fully recovered and explain to them what has happened as they may not remember.

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Answer 2

From personal experience, blackouts and trembling can occur when you have hypotension - in other words, very low blood pressure. Eating red grapes and other stuff that helps one generate blood can be beneficial. Also, you must be careful to not stand up too quickly, as you will likely feel intense dizziness which might lead to blackouts as a result of hypotension.