Weird health problem: near fainting?

for a few years now i've gotten like these almost fainting spells. randomly, i'll become faint and need to go to the bathroom. i'll break out in a cold sweat, feel nausea and lightheaded, my vision will get clouded and i'll need to lay down and let it pass. sometimes i'll have diarrhea or will throw up. at most, these symptoms will continue for about 10 min. and once they pass, it was like it never happened. sometimes it will happen during my period, but not always.

i've been to the doctor and they didn't know what to make of it.

could be low sugar . . . next times you feel this way have a glass of orange juice or a cookie and see if it helps. That would explain the fainting feeling.

This is because of low blood pressure. Ask your doctor about it. I know what you mean-- I experience it too.
Sometimes, this is because you have not consumed enough food, or you are dehydrated, exhausted, tired, or all of them.
See your doctor again.

You are not eating enough. What you are describing is known as hypoglycemia. Eat a well balanced diet and drink enough water. Your body will not work unless it has fuel. You are sparing it fuel. Eat according to the food pyramid and exercise. You will be fit and healthy.

I'm not an expert, but it could be something to do with iron deficiency. The next time you go to your doctor, ask them (if they haven't already) to do an iron blood test and a full blood test which will test for other possible causes too.

I was quite anaemic (low levels of iron in the blood) for a while and it's something that can sneak up on you. I also have an overactive thyroid which caused me to have similar symptoms to what you described, so maybe have your thyroid levels checked too.

It's awful when you feel unwell and the doctors don't know why. I hope you can get it sorted out.

Wow!! U got ALOT of different answers- all of which COULD BE potential causes 4 ur symptoms. Personally, I've experienced the EXACT SAME THINGS- and was diagnosed w/ anxiety disorder. My sister also has it. It's VERY scary, embarassing and uncomfortable. Try 2 keep a record of these episodes- the date, time, symptoms, duration, etc. It may give u a better chance of being properly diagnosed. I wish u well, and I can truly sympathize w/ u. Good Luck!! :)