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Is one about to faint if?

Issue
One has symptoms such as feeling as though one is sleepy or that things are unreal, not sweating but rather feeling cold, feeling nauseated only at times, having numb hands, trouble walking a straight line, confusion, irritability (low blood sugar symptoms), etc. Or is one pretty safe from fainting if one is not sweaty or seeing things "tunnel" away? I have heard that fainting is like that.

How does one know when it is time to lie down or go home and rest, etc?

Best Tip

I think if you have any of these symptoms you should lie down.
BUT all of them?? There is something wrong with you! and you need to find out what.
Here is something to keep in mind...you will never know when you are going to faint! It just sneaks up on you! It takes about one second to register the feeling before the lights are out.
SO the only thing I can tell you is Don't drive if you are truly feeling the symptoms you mentioned!
And see a doctor.

Others
Go to the hospital or doctor right away. It could be alot of things. Get checked out. Or even call an ambulance and let the medics check you out.
sounds more like diabetes. go to a doctor.

Fainting is different for everyone, but usually happens faster than it gives you time to think about whats going on!
The person could be ready to faint or ready to enter a siezure or a diabetic coma. The person needs to find out why they are feeling that way. Get to the doctor. When you feel this way you need to lie down right away.
I don't know that there are always symptoms, but I have fainted a couple of times before and the first thing I notice is just a general feeling of weakness and nausea, my heart starts pounding a bit and a cold sweat occurs. Then things start going black, thus "tunneling". I would say however, that you should see a doctor if you are experiencing these symptoms, although it sounds like an anxiety attack to me. Take care.
when ever someone feels like this it doesnt matter if they are about to faint but they need to go to the hospital right away.
call 911 right now