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When you look at someone while yawning you will probably yawn.Some people think it's contagious.

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Q: What causes excessive yawning?
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What is the cause of excessive yawning?

Excessive yawning can be caused by a vasovagal reaction. A vasovagal reaction is caused by the action of a nerve on the blood vessels. This nerve is called the vagus nerve. It may indicate a heart problem.


Can yawning cause heart palpitations?

Um, I shouldn't think that yawning itself causes heart palpitations, but if you are extremely tired, there is more chance of you having a palpitation.


Is constant yawning a symptom?

You are very tired, have agood sleep before you die of the following : Excessive yawning (1-4 yawns/minute) is associated with a variety of conditions. The majority of these are disorders of the central nervous system, and include epilepsy, encephalitis, brain tumors, multiple sclerosis and progressive supranuclear palsy. Excessive yawning is also associated with opiate withdrawl and the consumption of a variety of drugs that affect neurotransmitters, such as drugs prescribed for Parkinson's disease or depression. You are very tired, have agood sleep before you die of the following : Excessive yawning (1-4 yawns/minute) is associated with a variety of conditions. The majority of these are disorders of the central nervous system, and include epilepsy, encephalitis, brain tumors, multiple sclerosis and progressive supranuclear palsy. Excessive yawning is also associated with opiate withdrawl and the consumption of a variety of drugs that affect neurotransmitters, such as drugs prescribed for Parkinson's disease or depression.


What causes tappets to make noise?

Excessive wear, or lack of oil. Or both. Generally lack of oil is what causes the excessive wear.


What effect does excessive revving have on your car engine?

Excessive revving of an engine causes overpressure in the crankcase. It causes unhealthy expansion in the pistons and the valves.


What causes excessive wind?

The foods you eat.


What causes excessive pitching suspension and steering?

No


Why is yawning not contagious to people with autism?

Yawning is not a disease.


What causes GI distress?

Excessive water intake and excessive caffeine will cause GI distress.


Is yawning rude?

if rude and yawning are defined as such i don't see any reason why the act of yawning be rude. yawning is physiologic. would urinating and defecating be rude also?


Is hypotension associated with more sleep and puffiness of face?

Yes Hypotension often causes excessive sleep. Excessive sleep often causes puffiness of the face.


What is the spelling of the yawning sound?

The spelling of the yawning sound is "yawn."