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Doctor insights on: Fainting From Laughing

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What happens when you faint while laughing?

What happens when you faint while laughing?

Laughter-induced or: Gelastic syncope is extremely rare. It is thought to be a sub-type of the situational syncopes; a valsalva-type effect: increased pressure in the chest reduces venous blood return resulting in decreased heart output and a transient reduction in blood flow to the brain, therefore fainting. Precautions are important to prevent injury if fainting occurs. Best regards. ...Read more

Dr. Rajiva Goyal
1,154 doctors shared insights

Syncope (Definition)

Loss of consciousness and postural tone caused by diminished cerebral blood flow. Syncope may indicate a particular medical condition, however often it may occur in an otherwise healthy individual. It is a common problem, accounting for 3% ...Read more


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Okay every time my mom laugh really hard it's feels like she is gonna faint and afterwards she gets really bad headache what can this be ?

Okay every time my mom laugh really hard it's feels like she is gonna faint and afterwards she gets really bad headache what can this be ?

Primary Cough Headac: Primary cough headache begins suddenly, lasts several minutes, and is precipitated by coughing, sneezing, or laughing. Be sure to rule out chiari malformation, carotid stenosis, cerebral aneurysm, and vertebrobasilar disease. Treatment is Indomethacin 25-50mg 2-3 times per day.Some patients (1/3rd) obtain relief of pain with lumbar puncture. ...Read more

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I was in bed and felt pain on my low abdome. Every time i laugh my tummy hurts. It got worse and i felt the need to faint and vomit. ?

I was in bed and felt pain on my  low abdome. Every time i laugh my tummy hurts. It got  worse and i felt the need to faint and vomit. ?

Need to see doctor : The cause of pain could be many things, such as appendicitis or other things. You need to see a doctor asap to get a full check up. ...Read more

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"fake" faints, shaking body parts out of sudden, expressionless, crying or laughing for no reason, random screams, can it be touretters? 14 y/o sister

"fake" faints, shaking body parts out of sudden, expressionless, crying or laughing for no reason, random screams, can it be touretters? 14 y/o sister

Attention seeking: Sounds like someone acting in a bizarre manor either to avoid some issue or get attention. Tourette syndrome often begins in the 4-6 yo & evolves over time. The teen who develops this late is unlikely affected. ...Read more

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My mother has trouble breathing when she's sleeping. She sometimes faints when laughs and randomly gets sleepy.

My mother has trouble breathing when she's sleeping. She sometimes faints when laughs and randomly gets sleepy.

Mom needs to see doc: There is a neurological disorder called narcolepsy in which people fall asleep inappropriately, and experience sudden loss of mucle tone with emotional arousal such as hearty laughter. That may cause a falling to the ground, but not true fainting (loss of consciousness). Breathing trouble is not part of narcolepsy. Sleep apnea, more common in obese people, may cause excessive daytime somnolence. ...Read more

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My husband sometimes faints during urination, coughing excessively or laughing too hard. He was previously diagnosed with a sensitive vagus nerve. About 2 years ago, he started having absence seizures where he stares into space and makes strange movements

My husband sometimes faints during urination, coughing excessively or laughing too hard. He was previously diagnosed with a sensitive vagus nerve. About 2 years ago, he started having absence seizures where he stares into space and makes strange movements

Neurologist: Fainting during urination, defecation with straining is not uncommon. You can actually live without a vagus nerve - in the past, surgeons would treat peptic ulcers this way- but please see your neurologist with a written list of your questions. ...Read more

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What causes faintness? Not exercising enough?

What causes faintness? Not exercising enough?

Complex answer: If this has happened more than once you need to see your doctor to determine what is going on and the cause. ...Read more

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2 second palpitations occuring every 10 mins or so for hours post workour after I started 1.5hr daily intense exercise again 2 days ago. No faintness.

2 second palpitations occuring every 10 mins or so for hours post workour after I started 1.5hr daily intense exercise again 2 days ago. No faintness.

Be seen: I would sure be seen and you may benefit from an echocardiogram and/ or a stress test. There are numerous reports of even high level athletes who have congenital and developmental cardiac conditions that manifest themselves during exercise. ...Read more

Fainting (Definition)

Faintness is a clinical finding similar to a loss of consciousness and collapse. This can include ...Read more


Passed Out (Definition)

Or passing out implies loss of consciousness. Frequently a cardiac ...Read more