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I get really dizzy & my vision goes white (can't see), usually when I stand up. Sometimes my knees buckle, I collapse. Usually only for 10~20 secs. Y?

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Dr.
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In brief: Postural hypotension

Feeling lightheaded on standing , having blurry vision and collapsing is most like drop in blood pressure , called postural hypotension.
In most cases it does not indicate anything sinister but falls secondary to it can cause injury . Certain blood pressure medications, dehydration due to diarrhoea, vomiting can also result in postural hypotension. See Gp for review if symptoms occur regularly.

In brief: Postural hypotension

Feeling lightheaded on standing , having blurry vision and collapsing is most like drop in blood pressure , called postural hypotension.
In most cases it does not indicate anything sinister but falls secondary to it can cause injury . Certain blood pressure medications, dehydration due to diarrhoea, vomiting can also result in postural hypotension. See Gp for review if symptoms occur regularly.
Dr.
Thank

In brief: Orthostasis

This is a phenomenon called orthostasis.
It is very common and usually related to blood volume status. The reason you are having this is the unclear part and what a doctor can help you with. Try doing 5 toe raises when you feel the symptoms to raise your blood pressure

In brief: Orthostasis

This is a phenomenon called orthostasis.
It is very common and usually related to blood volume status. The reason you are having this is the unclear part and what a doctor can help you with. Try doing 5 toe raises when you feel the symptoms to raise your blood pressure
Dr. Richard Jackson
Dr. Richard Jackson
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