Η υπερθερμία είναι η κατάσταση κατά την οποία ο οργανισμός έχει αυξημένη θερμοκρασία χωρίς να έχει πυρετό.
Η θερμοκρασία του σώματος είναι αυξημένη σε σχέση με τα
φυσιολογικά επίπεδα, αλλά όχι ως αποτέλεσμα ανύψωσης του φυσιολογικού
θερμοστάτη του υποθαλάμου, όπως συμβαίνει με τον πυρετό.
Στην περίπτωση της υπερθερμίας, η αύξηση της θερμοκρασίας οφείλεται
σε αδυναμία του οργανισμού να αποβάλλει την περίσσεια θερμότητας όπως
π.χ. στη θερμοπληξία, στον βαρύ υπερθυρεοειδισμό και μετά από λήψη
συγκεκριμένων φαρμάκων (παρεμπόδιση εφίδρωσης).
Τα συνηθέστερα αίτια υπερθερμίας είναι τα εξής:
-Θερμοπληξία.
-Ασθένειες του κεντρικού νευρικού συστήματος.
-Υπερθυρεειδισμός.
- Εμμηνόπαυση
- Άσκηση
-Λοιμώξεις, συμπεριλαμβανομένων της εγκεφαλίτιδας, της ελονοσίας, της μηνιγγίτιδαςκλπ.
Hyperthyroidism
Feeling warm? A
problem with your thyroid gland could be to blame. With hyperthyroidism,
the gland makes too many hormones. This speeds up the rate that your
body turns fuel into energy, which makes you hot. You may be more
thirsty, hungry, and sweaty and your heart may race. You also may have
diarrhea or itchy rashes. Women may have lighter or skipped periods or
trouble getting pregnant.
Menopause
It's when a woman
stops having her period for good, usually around age 50. You'll likely
get "hot flashes." These are sudden, brief increases in body
temperature. Menopause may cause intense sweating, dizziness, and a
racing heart. The symptoms usually start before your last period and can
last for several years. If they're severe, your doctor may suggest you
manage them with hormone replacement, medications, and lifestyle
changes.
Primary Ovarian Insufficiency
It happens when a
woman's ovaries don't make normal amounts of the hormone estrogen or
release eggs on a regular basis. It may be hard to get pregnant. You
also may have hot flashes and night sweats that feel the same as
menopause symptoms. Talk to your doctor if you notice these problems or
skipped periods, less sexual desire, and vaginal dryness.
Fever
Your body works
best at around 98.6 F. Higher than that and you may have a fever, which
can make you hot and sweaty. This often happens as your body tries to
fight off germs like viruses or bacteria. Fluids, rest, and
over-the-counter meds can help. Tell your doctor about a fever of 103 or
higher or if you're feeling worse. Go to the emergency room if you have
severe symptoms like a very bad headache, stiff neck, confusion, or
seizures.
Caffeine
Caffeinated coffee
can make you more alert and less sleepy in the morning, but it also
boosts your body temperature. Too much of it can raise blood pressure,
blood sugar, and stomach acid and cause sleep problems. Read packaging
on tea, soft drinks, chocolate, and medicine. Gauge your own response to
figure out how much is too much for you.
Spicy Food
Feel like your body
heat zooms when you eat those spicy hot peppers at your local taco
joint? You may be right. Spicy food seems to raise your core body
temperature and can even make you sweat. There's nothing to worry about.
Some studies show a spicy diet appears to be good for you. Just don't
overdo it, especially if you notice that it makes you feel bad.
Exercise
Work your body hard
and it burns more fuel. That makes more heat. Your body tries to get
rid of it by sending warm blood closer to the skin and cooling it with
sweat. But sometimes it can't get rid of it fast enough and your core
temperature goes up. It happens more easily when it's hot and humid,
when it can lead to heatstroke, a serious condition that needs emergency
medical care.
Hot Weather
Your body tries to
keep itself at 98.6 F no matter what the weather. When it's hot and
humid, your body moves blood to the skin's surface and cools it with
sweat. But not right away. It waits until your body hits a certain
temperature. The exact number can vary depending on your age, health,
and fitness level, but you're likely to feel hot even as your body tries
to cool you down.
Diabetes (Types 1 and 2)
With this disease,
your blood vessels don't dilate, or widen, as well as they should, which
makes it harder to bring blood to the skin's surface and get rid of
heat. The sweat glands that are supposed to cool your skin don't work as
well either. That makes it much harder to get your temperature back
down.
Age
When you're older,
your cooling system may not work as well. If it's hot outside, your
heart needs to pump more blood to the surface to help keep your body
cool. As you age, your heart just isn't as strong, so it has to work
harder. To make things worse, your blood vessels may not widen like they
used to, so you can't get as much blood to the skin's surface at once.
Cardiovascular Disease
If you have it,
your blood vessels don't expand as well as they should and your
sweat-based cooling system doesn't work as well either. This makes it
harder to cool down when you're hot. It can be dangerous, too. A
weakened heart may strain to send blood around your body, and that can
cause a heart attack.
Drink Too Little Water
If you don't stay
hydrated, you won't sweat enough and your body can't cool as easily. If
you think you may not be getting enough water, take an iced water bottle
with you when you are out in the heat or working out.
You're Out of Shape
When you're fit, it
can help keep you cool. It's not clear why, but studies show that
people who do more aerobic exercise -- the kind that gets your heart
pumping -- are better able to cool down when they get hot. And of
course, it's also good for your heart, weight, and even your mood.
You're Not Used to Hot Weather
The more time you
spend outside, the easier it is for your body to get used to the heat.
It takes about 2 weeks for a healthy person to get "acclimated" to a new
temperature -- longer if you're older or ill. Once it does, you'll feel
cooler and your body will be better at staying cool and hydrated when
working hard. It can help to set your indoor temperature no more than 10
degrees cooler than the outdoor temperature.
Obesity
Lean people stay
cool better than folks who are overweight. The more obese you are, the
less skin surface you have for each pound of body weight. The result:
less cooling power. If you need to drop some pounds, talk to your doctor
about ideas for a healthy diet and an exercise program.
SOURCE :WebMD
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