7 Reasons for Night Sweat
Sweating
is usually a natural necessary way for the body to cool itself when
overheated. But excessive sweating at the wrong time can be pestering or
even a cause for concern. Have you ever woken up in the middle of the
night, or in the early morning, dripping in sweat as if you’ve just run a
marathon?
If
so, you’re not alone. Night sweats, or sleep hyperhidrosis, is quite
common and usually doesn’t have to do with the temperature in the room.
There is a variety of factors that might prompt night sweating, some
more concerning than others. This is what you need to know about night
sweats, the common causes, and when you need to consult a doctor.
1. Gastroesophageal reflux disease (GERD)
GERD is a digestive disorder that makes patients experience recurring acid reflux-
acidic stomach juices or food and fluids that travel back up from the
stomach into the esophagus. If GERD is the reason you wake up sweaty, it
will usually be accompanied by more classic symptoms of GERD, primarily
heartburn. If you suspect that you suffer from this condition it is
strongly recommended to see a doctor. Early treatment will minimize the
risk of complications.
Your
physician may prescribe antacids or histamine H2 blockers. The
latter also referred to simply as H2 blockers, work by decreasing your
stomach acid production. Other recommended steps are to eat smaller
meals, have dinner at least 2 hours before bedtime, and avoid trigger
foods like those that are fatty, fried, or tomato-based.
2. Hormonal Disorders
The body’s temperature is
controlled by an area of the brain called the hypothalamus which is also
responsible for the production of certain hormones. When your hormones
are out of balance, it may prevent the hypothalamus from regulating your
body temperature properly. Two conditions that are caused by hormonal
imbalances and are often the reason for night sweats are hyperthyroidism
and menopause.
- Hyperthyroidism - the thyroid
gland controls the metabolism, so when it produces too much thyroid
hormones, your body goes into overdrive, and its temperature rises. You
may feel hungrier or thirstier than usual, experience racing pulse or
shaking hands, feel tired, and suffer night sweats.
- Menopause - This might be the
most common hormonal fluctuation to cause night sweats. Perimenopause,
also called menopause transition, occurs 7 to 14 years before menopause
itself. It’s the time when the ovaries gradually start to produce less
estrogen, and it usually lasts up until menopause itself, the point when
the ovaries stop releasing eggs.
More than 80% of women in perimenopause and menopause experience hot flashes — sudden, intense feelings of warmth. The sharp drop in the estrogen affects the body’s temperature regulation and often leads to night sweats. Menopausal night sweats are very common and not a cause for concern, although they can be uncomfortable. You may talk to your doctor about treating this symptom with medications that help replace estrogen.
3. Anxiety and Stress
Anxiety,
worry, depression, or feeling overwhelmed do not magically disappear
when you go to sleep. When you are not conscious you can’t actively
think about the things that bother you during the day, but when you
experience stress your brain produces an excess of the hormone cortisol.
High levels of this hormone can cause disruptions in your sleep,
including night sweats.
Managing
mental health is crucial for your physical wellbeing. Seek help from a
counselor, therapist, or doctor if you feel that stress is causing
ongoing disturbances in your daily life.
4. Certain Medications
Night sweats can be a side effect of certain medications. For example, it's very common among people who regularly take antidepressants. A study conducted in 2018 found that up to 14% of people on Selective Serotonin Reuptake Inhibitors (SSRIs) — the most common form of antidepressants — experience excessive sweating and night sweats. According to the study’s authors, the reason for that is that this kind of medication affects the areas of the brain which produce hormones and help control temperature and sweating.Other medications that might cause night sweats include triptan migraine medication, diabetes medication like Metformin or insulin, hormone-blocking medication, and even aspirin. If simple solutions like sleeping in lighter clothes or keeping the room cooler are insufficient, talk to your doctor about your concern.
5. Infection
When
you get sick with a viral or bacterial infection, the level of
inflammation in your body will increase in order to fight off the
intruder, and one of the ways it does that is by raising the body
temperature. This can cause fever and night sweats. If you experience a
combination of both of these symptoms, you may want to check with your
doctor about the type of infection you have.
Tuberculosis
is one of the most common infections to cause night sweat, but there
are also more serious conditions that are common culprits - like HIV and
bacterial endocarditis (an infection of the inner lining of your heart
and heart valves). “These conditions can produce chemicals called
cytokines which combat infection. Cytokines can induce fever and night
sweats,” explains Soma Mandal, MD, board-certified internist at Summit
Medical Group, in Berkeley Heights, New Jersey. Your doctor will check
for them based on your risk factors, additional symptoms, exposure, and
travel history.
6. Sleep Apnea
Sleep
Apnea is a condition that causes you to briefly stop breathing
during sleep, usually several times at night. Obstructive sleep apnea
can generally occur when something, like a throat tissue, is blocking
your airway, while central sleep apnea can develop as a result of other
health conditions affecting the function in your central nervous system.
Because
your body isn’t getting enough oxygen it may slip into ‘fight or
flight’ mode, which triggers sweating. Moreover, each time your muscles
need to kick-start breathing again, it requires a burst of work from
them. This effort causes sweating. A 2013 study found that excessive
sweating at night happens three times as often in people with untreated
sleep apnea. If you suspect you’re suffering from this condition it is
extremely important to seek medical help!
7. Cancer
The types of cancer most associated with night sweat are lymphoma and leukemia. These can start in different areas of the immune system like the spleen, bone marrow, lymph nodes, and the thymus. About a quarter of people with Hodgkin's lymphoma report getting night sweats. Other symptoms may include feeling tired, itchy, and experiencing pain where the tumor is after drinking alcohol. People with aggressive or advanced non-Hodgkin's lymphoma can get drenching night sweats, too.
According to doctors,
most types of cancer will have other noticeable symptoms too, so there
is probably no need to panic at the first sight of night sweat. It’s
recommended to seek medical help if you experience night sweats,
fatigue, and generally feel unwell for more than 2 weeks. Other signs to
look out for are a persistent fever and unexplained weight loss.
When Do Night Sweats Become a Cause for Concern?
Generally speaking, experts claim that night sweats by themselves are not always a cause for worry. That's especially true if they're happening for a common reason — like if you're going through menopause or taking SSRIs. Take note of any additional symptoms you experience, alongside night sweats, like fever, weight loss, general malaise, or change in appetite. This is usually an indication of a bigger underlying problem.
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