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What causes headaches?

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Blood vessels in your head dialate, (open up) causing them to fill with blood, voila, instant headache!!

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Omg I feel so uneducated right now b/c I'm studying for doctoring and I didn't even kno that.... I have a low c in that class as of now
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Don't feel uneducated, some information comes with time/experience, been a nurse for a long time!!
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oh.... ok b/c this is my first year i have medical classes
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Pretty sure that blood vessel dilation only refers to vascular (i.e. migraine) headaches. Which is why some medications for migraines constrict the blood vessels. I'm not a doctor - but neither are you - which is why I recommended a website to the inquirer: http://www.headaches.org/
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Okay
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oh lindo
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IDK what u were doing but I usually get headaches when I'm on my period, if I have an eating disorder, if I slept too little or too much, and when I'm learning math. I also have one when I drink too much pomegranate juice and oraange juice and brownies and other sweet foods.

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Ok :) that helped me as we'll just started my period today ..
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lack of drinking water mostly.

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As I thought.
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if you lack sleep or are suffering from a cold

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hate

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Seems legit
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Listening to Skrillex at full volume with headphones on and the world off.

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-.- haters
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A lot of things can give you a headache such as kids, loud noises, stress, if you strain your eyes for anything for a long amount of time, and not enough sleep.

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when u feel pressured u keep on thinking at that moment headache causes

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not eating for a certain period of time starving your self

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A headache, medically known as cephalalgia, is a continuous pain in the head. The pain can be anywhere in the head or neck. As the brain has no pain receptors, headaches are not felt in the brain. The pain is caused by disturbances of the pain-sensitive structures around the brain.

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Not too many people don't know about this but, headaches also occurs with your teeth too. If you have a headache, it can also lead to your teeth. Your teeth is also part of your head or skull. If not that, then it is probably because you are not getting enough sleep. Or maybe, you are not getting enough oxygen in your system. Also stress can lead to headaches. Your eyes are also part of it. If you stare very hard at something or trying to focus very hard on an object or anything that is very bright, that causes strain, that can also lead to headaches.

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it happens when its too loud or your sick or anything else

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This may sound bizarre, but headaches can be triggered by lifestyle factors, including:
Alcohol, particularly red wine
Certain foods, such as processed meats that contain nitrates
Changes in sleep or lack of sleep
Poor posture
Skipped meals
Stress

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I knew that :p
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Good for you.
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Actually you just listed mostly Migraine triggers, except for the poor posture. I think the most common type of headaches are muscle tension.
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These are all migraine triggers (well maybe not posture). Trust me I've had migraines since I was 18. Not to say that some of these don't contribute to other types of headaches, but this list reads like ones from my neurologist.
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stress screaming loud music

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usually for me, that time of the month. -.-

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Stress, lack of sleep, sickness, abuse of drugs (alcohol, tobacco), dehydration

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I get headaches when I cry or get mad.... I always have headaches my anger management therapist tells me to let it go but idk how to

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If you have enough anger to go to therapy lookup "bipolar type II". Then if you might fit in this see a psychiatrist. I have much less after going on treatment.
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i am bipolar i kno i am im also claustrophobic and everyone always wants to b around me all day it gets on my nerves
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Lack of sleep for me but I have known too much noise, dehydrated, tobacco use, dizziness, sickness and too much time in the sun.

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I don't know what cause the headache exactly ,because there got to be few reasons,but i know a way how to cure it: put radish juice into your nose when you have the headache ,it's pretty effective .

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YOUCH! That sounds awful. Also sounds like a cure for YOUR headache which is probably sinus. Maybe.
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Doesn't that smart? If that helps your headaches, maybe you have sinus headaches.
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Wtf
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when you dont get enough sleep your not drinking enough water and if your a girl sometimes having your hair high and tight!

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Stress...

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Some people get headaches from tension, but others don't get headaches even if they are feeling all kinds of tension. We are different.

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Yes! Headache in the back of the head is from a cervical disc until proven otherwise. Put "mcfadden headache wordpress" in search to see more.

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bad eyesight/glasses that don't work anymore
dehydration
noise
stress
tight hair styles

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children and my daughter around Christmas time...daddy, I want an American girl doll and a puppy" it's a migraine hearing that every day

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bad eyesight, loud noises, and strong smells

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slenderman

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not having enough sleep, eating salty foods. crying a lot, loud noise, and wearing glasses

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...or NOT wearing glasses :)
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hunger , deyhdraytion , sick , stress

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Inevitable snort of roommate at night

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futurefireman

stress

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because u probliy stressing alot

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A lot of television, computer, etc

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Reading all of these answers....lol. Try this site: http://www.headaches.org/ which is the National Headache Foundation. I didn't see anybody mention overuse of headache meds, which is a biggie.

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not eating enough pie. mmmm pieeee

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cialis, viagra

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if its to cold or to hot outside.

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Problems

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Lack drinking water , or need specs , lack in sleeping , or allergic to some food , or in stress depression , or of many kinds pollution like noise , air ...... , strong perfumes , tiredness , migraine , seeing t.v , lack in vitamins....wear comfortable dresses and hairstyles.....put some oil to your hair and massage your scalp and keep your hairstyles loose don't tie it tightly don't take stress




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lack of vitamins
barely any sleep
anxiety (when you get nervous a lot)
stress
strong scents
strong, bright lights
repetitive pain
quick temperature changes
very cold and hot temperatures
laughing too hard
being around loud noises

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Out of think

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I have had migraines since I was a kid doctors could not find the cause of them but I finally found out it was due to a food allergy not all are due to this thou

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a lot of useless tension.....

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Lots of different things: Too much reading , intensive hours of playing , exposed for too long on the Sun , not eating your meals , being worried , if you're tired you'll get 50% chance a headache , not sleeping the recommended hours.

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Listening to Justin Bieber or shopping at Wal-Mart. I recommend instead listening to Daft Punk, Justice, and Aphex Twin, and shopping online. ;)

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screaming, loud noises, stress !!!

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IDK, but I got a headache thinking about the question.

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Loud noises and yelling/screaming too much.

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a lot of things that's for sure

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stress and pressure

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stress,school, and home work also anger and fevers

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Banging your head against the wall.

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It might be due to number of reasons such as acidity, cough and cold, fever, stress and tension.

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genetics is one.. others are pressure and problems that are too difficult to handle

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Not sleeping

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drhelp

many causes ,such as : hypertension , hypo tension , sinusitis , migraine , eye troubles , psychological stress , tumors , inflammation in the teeth , inflammation in the scalp , ear troubles , fevers , .......etc....

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llamas and rainbows

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lots of things like hitting your head :D

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Reading Books that it I don't like or Looking AV !

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Some common ways headaches occur are:loud noises,sickness,a hard force or blow to the forehead area,stress,a tumor,and dehydration. There are more ways but too many.

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dizziness, dehydration, little sleep, and sore eyesight

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When your broke.

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You're*
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Dehydration, cough n' cold ,fever.... many things

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Discomfort and anxiety

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if you see more tv, computer and taking more stress

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Believe it or not--after all these years I found out that the tryptophan in turkey not only makes you sleepy, in some people it can also cause a debilitating headache! I ate Turkey for 2 days after Thanksgiving and each morning woke up with a headache so bad it brought tears to my eyes. I then ate NO turkey for 2 days--NO HEADACHE the following mornings and to test my theory I ate a turkey sandwich on white bread with nothing but Miracle Whip and the next morning--splitting headache. I looked up the side effects of tryptophan and sure enough out of 6 major ones 3---nausea---dry mouth---and headache were 3 of the effects! I threw out the turkey and ever since then have not eaten any roasted turkey and sure enough---NO HEADACHES!!!! I decided next Thanksgiving I will but 2 large chicken breasts(I live alone) make Chicken stuffing with chicken gravy and hopefully no more headaches. I never would have believed turkey(tryptophan in it) would give me a horrible headache! Will miss the turkey but certainly not the headaches!

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You made me smile. I always blamed the relatives!
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Fists

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maybe a head trauma :P

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Stress, lack of sleep

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lack of water, little sleep, stress, blood vessels, noise, heavy sweating. for me it's weather. Rain and sun give me headaches which sucks since i love rain and warm weather!

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A lot of things.

1. Having a head, it's a natural occurance of nature and humans.

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Headache is a general term. It depends on what type of headache you were referring to. Migraine? Tension? Or the type of headaches that people usually refer to like "you are causing me headache". :). Headaches can be triggered by many things. Need more history, signs, and symptoms in order to answer ur question.

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TwoTeaCups

Dehydration.

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stress

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OvertheTop

Stress.

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Stress , Being Hungry , Dehydration , No sleep , Strong Perfume . Crying .

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lindo

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When you do something stressful!!!!

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Foolish actions.

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When you are stressed out

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crying. and when your stressed out... and when you dont feel good.and when your annoyed.

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I think that when you are stressed, that causes a headache.

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stress, hunger, cold, flu, thirstiness, tired, excited, loud noises

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Well for me i usually get headaches cuz I can't focus sometimes on one thing and my eye gets strained, or cuz I get really hyperactive and I use all of my energy on useless activities and mostly cuz I never drink water

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