
What Causes Hot Flashes? (COURTECY;- webMD )

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Doctors
Call It "Flushing"
You may think of hot
flashes -- sudden waves of heat coming from your head, neck, or torso maybe
with red, blotchy skin, sweating, and a rapid heartbeat -- as something only
women get around the time they stop having their period. But this flushing can
be the result of many things as your body tries to cool down. Not everyone
sweats when they have one, and you may feel chilled afterward.

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Hormone
Levels
This is what's behind
menopausal hot flashes. As the estrogen in her body declines, a woman's
thermostat resets and cooling measures start to kick in sooner. But a man might
get hot flashes as his testosterone level drops in middle age, especially if
he's had a certain kind of prostate cancer treatment. An overactive thyroid
gland, perhaps from Graves' disease or after giving birth, or something else
that's causing high levels of thyroid hormone may also do it.

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Exercise
Your body temperature
naturally rises when you work hard. To keep up, your cells burn more fuel,
which makes extra heat. Your body sends more blood closer to the skin to cool
it off, and evaporating sweat helps bring your temperature down. That's why it's
important to drink water when you work out. If you exercise regularly, your
body gets used to that heat you make, and your core temperature can get a
little higher before you react.

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Fever
Your body fires up when
it's fighting germs. And that rising body temperature will trigger a part of
your brain called the hypothalamus to start the cooling process and bring your
temperature back to normal. Call your doctor if your fever is more than 103 or
if you also have a bad headache, breathing problems, or can't stop throwing up.

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Allergic
Reaction
A hot flash is common
with a serious reaction called anaphylaxis as your immune system releases cells
to try to fight off something that's actually harmless. You'll usually have
other symptoms like stomach pain, hives, and breathing problems, too. And you need
a shot of epinephrine -- fast.

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Neurological
Disorders
Your autonomic nervous
system controls things you don't have to think about, like your breathing,
heart rate, blood pressure, body temperature, and sweating. Anything that
throws off how it works can cause flushing. That includes Parkinson's disease,
epilepsy, MS, and spinal injury and nerve damage.

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Migraine
and Cluster Headaches
These painful and
sometimes disabling headaches can also mess with your autonomic nervous system.
Your brain isn't processing messages from the nerves in your head and neck
about touch, pain, temperature, and vibration correctly. Your "fight or
flight" response may kick in, which gets your blood pumping and widens
your airways.

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Medications
Flushing can be a side
effect of many drugs. Some heart and blood pressure medicines, including
calcium channel blockers and nitroglycerin, and ED prescriptions, like
sildenafil (Viagra), tadalafil (Cialis), and vardenafil (Levitra), open up your
blood vessels. High doses of steroids can affect your hormone balance.
Chemotherapy drugs and painkillers from aspirin to opiates are also culprits.

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Food
and Additives
Your five-alarm,
extra-spicy meal probably gets its kick from red peppers. They have capsaicin,
which confuses your nervous system to react like you're being burned. Sulfites
and sodium nitrate (in meats like salami and cured ham) may cause flushing. Too
much MSG (monosodium glutamate), often used in Asian cooking, may set off a hot
flash in people who are prone to them. A hot drink can raise your body
temperature and start one, too.

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Blushing
Even a small, healthy
emotional response can set it off. Your nervous system gets triggered, your
blood vessels widen, and the resulting rush of blood into your skin raises its
temperature. It's more common in women, but it happens to men, too. It could be
that blushers are more sensitive about what others think of them. People who
blush easily often respond to stress with a racing pulse, dry mouth, and
trouble thinking clearly.

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Rosacea
This skin condition
isn't blushing, although it may look like it. Flushing is one of the first
signs of a flare, often with a burning, stinging, or itchy feeling. Your face
may swell up, too, around the sides of your nose above your mouth. You can
control rosacea by avoiding your triggers and with careful skin care, sun
protection, and perhaps help from your doctor.

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Alcohol
Both alcohol and one of
the chemicals that results when your body breaks it down will widen the blood
vessels that supply your skin. Fermented drinks like beer and wine may have
other chemicals -- histamine, sulfites, or tyramine -- that have a similar effect.
If your liver doesn't process alcohol well, or if you drink while you're taking
certain medications, your hot flashes may be worse.

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Carcinoid
Tumors
These rare, slow-growing
cancers can make hormones or mess with yours. The tumors are usually found in
your stomach and digestive system, appendix, or lungs. Red meat, chocolate,
alcohol, exercise, or stress might trigger the hot flashes. You could also have
purple spidery veins on your nose and upper lip, diarrhea and cramps, a hard
time breathing, or a racing heart.

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Track
Your Flushing
Can't tell what causes
your hot flashes? Keep a diary with notes about your episodes and what you were
doing, eating, and feeling, and any medications you had taken. Then look for a
pattern. If it's still not clear after a couple of weeks, see your doctor (and
bring your diary) to help you figure it out.
This tool does not provide medical advice














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