can poor blood circulation cause you to feel light headed , like when you laugh?

Question

sometimes when i laugh i feel light headed and have passed out only for a second my hands shake and i have no control

Answer 1

YES. Poor circulation means that your oxygenated blood is not getting to the body's vital organs (BRAIN) in fair amounts of time. SEE A DOCTOR ASAP and schedule a venous or doppler ultrasound to rule out deep vein thrombosis (DVT) which is a form of bloot clot usually found in the legs.

Answer 2

yes, that's exactly what causes you to pass out - blood is not getting oxygen to your brain. this can be due to poor blood circulation, or if you hold your breath for a long time and don't get oxygen.

if you feel light-headed, you should see a doctor. you should also sit down and put your head down between your knees to get the blood flowing to your head. you'll feel better.

Answer 3

Poor blood circulation can do that, but that sounds more like a lack of oxygen - do you have any breathing problems?

Answer 4

I would go see a doctor.. "just to be on the safe side.... this could be from many factors.. but like I said the smart thing to do I'd go to the doc, and perhapse you can tell he/she what your experiencing and they may want to run some blood tests... hope this helps :)

Answer 5

In the case of laughter, sometimes, a person tend to hyperventilate causing poor blood circulation carrying much needed oxygen to the brain. This in turn can cause lightheadedness or syncopal episode as you described when you passed out for a few seconds.

What is loss of consciousness?

Loss of consciousness is interruption of one's awareness of self and surroundings. When loss of consciousness is temporary and recovers spontaneously it is referred to as fainting or syncope.

Temporary loss of consciousness, or syncope, has been reported to account for 3 percent of patient visits to emergency departments.

How does temporary loss of consciousness occur?

Temporary loss of consciousness is a result of a temporary reduction in the blood flow (and, therefore, oxygen) to the brain. This can lead to lightheadedness or a "black out" episode of loss of consciousness. There are many conditions which can temporarily impair the brain's blood supply.

What conditions cause temporary loss of consciousness?

Temporary loss of consciousness can be caused by heart conditions and conditions that do not directly involve the heart.

Temporary loss of consciousness is more commonly caused by conditions that do not directly involve the heart.

These conditions include those caused by:

1) a shift in body position from lying or sitting to a more vertical position (postural or orthostatic hypotension)

2) dehydration

3) blood pressure medications

4) diseases of the nerves to the legs of the elderly

5) Diabetes such as in hypoglycemia

6) Parkinson's disease.

A decreased total blood volume and/or poor tone of the nerves of the legs from these conditions causes a disproportionate distribution of the blood in the legs, instead of up to the brain, when standing.

Other common non-heart causes of temporary loss of consciousness include fainting after blood is drawn or after certain situational events (situational syncope,or vasovagal syncope or vasodepressors), such as after urination, defecating, or coughing; or stressful events, anxiety or LAUGHTER.

This occurs because of a reflex of the involuntary nervous system (vasovagal reaction or vasovagal attacks) that leads to slowing of the heart rate and dilation of the blood vessels in the legs, thus lowering the blood pressure. The result is that less blood (therefore less oxygen) reaches the brain as it is directed to the legs.

With situational syncope, patients often note nausea, sweating, or weakness such as in your case, just before the loss of consciousness occurs.


Brain strokes or CVA or "near-stroke" (transient ischemic attacks or TIA's ) and migraines can also lead to temporary loss of consciousness.

Hope I answered your question thoroughly. To treat this lightheadedness or syncope is to address the underlying causes mentioned above. I wouldn't be too concerned if this is not a regular occurence. However, if they occur frequently; you should definitely see a doctor to rule out the above illnesses or conditions; just to be on the safe side.

Answer 6

laughing can cause a rapid drop in blood pressure, or an arrhythmia. neither one is common, but they can happen. this is not normal, and can be a sign of a serious problem. you need to discuss this problem with your doctor as soon as possible.

Answer 7

Yes absolutely. See your doc immediately if you havent already.