What could be causing me to blackout while urinating?

Answer by  benjiross (993)

This is called micturition syncope. Straining to pass urine causes vagal stimulation that drops the blood pressure and causes a blackout. Its better to sit when passing urine and not strain too hard. Rarely a phaeochromocytoma in the urinary bladder can cause this!

Answer by  Anonymous

I had this happen recently. Blacked out, cracked my skull open and ended up in the hospital. After blood tests, ekg, ct scan, mri and carotid artery ultrasound, diagnosis was acute sinusitis. This surprised me as I have never had sinus problems in 60 years. Antibiotics fixed it.

Answer by  Jenn91 (122)

If the blackout occurs right when you sit down, it might not have to do with urinating at all. You could have a chemical imbalance or vitamin deficiency. If it is just when you urinate, you could have some type of bladder infection.

Answer by  alil1b81005 (29)

You might be passing kidney stones and blacking out from the pain of it all. The other option is you might be that tired.

Answer by  Jenniedeelo (169)

I'm no doctor but the only thing I can think of that causes that is vasovagal disease. It's very rare and doesn't cause alot of grief but it causes men to occasionally blackout while urinating due to a drop in blood pressure.

Answer by  mariemarie (4)

I woke up this morning with stomach cramps and went to use the bath room and nothing happened, then I woke up on the floor and I realized I black out. I was sweating and had urinated while black out. what could cause this?

Answer by  mariemarie (4)

I woke up with stomach cramps and went to the bathroom and nothing happened, then black out and woke up on the floor sweating and I had urinated.