Seeing black when I stand up

[ashtongutsa]

Hi guys so I'm 19 almost 20 in march so what's being happing to is that when ever I'm sitting down wether on my phone or watching tv and the second I stand up my vision gose all black and I can't see anything for about 3 to 5 seconds can you tell me what happens please I'm worried and scared that one day I may faint and sometimes it happens when I'm laying on my bed to it usually happens 2 times a day

[Hidden]

Hi no one on here can diagnose you and you need to see your doctor if you are worried. Do you suffer from asthma? x

[Hidden]

Google:- AMAUROSIS FUGAX

(transient monocular or binocular visual loss).

[O-T-]

High there, that sounds like a low blood pressure thing, often occurs with relatively tall people I think, and more in one's youth, I had the same.

Is there also a feeling of 'becoming distant from things'? - a sort of feeling as though you might collapse or faint? That's what I had. However, it's worth mentioning it to a doc in case it's a sign of something else, or indeed if your blood pressure isn't working like it should.

[johnsmith]

This can have a variety of causes. Only a doctor can do or arrange the tests to determine what the problem is.

One cause can be serious, another cause could be minor one easily fixed.

[emmasue]

I used to get like this. It was down to low blood pressure. Make sure you aren't cutting out too much salt in your diet. When my kids were babies I didn't cook with salt and I found I was worse. When I added a bit if salt occasionally the symptoms improved. If you are worried, speak to your doctor.

[ashtongutsa in reply to emmasue]

I don't usually have water that often that much