Feeling of extreme sadness in feeling the air above the head. Your skin may blush as if you were blushing. Hot flashes can also cause sweating. And if you lose a lot of body heat, you may feel cold afterward. Night sweats are heat that occurs at night and may interfere with your sleep.

Although other medical conditions can cause hot flashes, they are often due to amenorrhea — the time when menstrual periods become irregular and eventually stop. In fact, hot flashes are the most common symptom of menopause.

There are a variety of treatments for annoying hot flashes.

Symptoms
During a heat stroke, you may experience:

A sudden feeling of warmth spreading across your chest, neck, and face
Appearance glow accompanied by redness and patchiness of the skin
fast heart rate
Sweat, mostly on the upper body
Shivering when the hot flash subsides
feelings of anxiety
The frequency and severity of hot flashes varies among women. A single attack may last a minute or two, or it may be up to 5 minutes.

Hot flashes may be mild or so severe that they can interfere with daily activities. It can occur at any time of the day or night. Nighttime hot flashes (night sweats) may wake you from sleep and can cause long-term sleep disturbances.

The frequency of hot flashes varies among women, but most women who report hot flashes experience them daily. On average, symptoms of hot flashes last more than seven years. In some women, it may persist for more than 10 years.

When do you visit the doctor?
If hot flashes affect your daily activities or your sleep at night, consider seeing your doctor to discuss treatment options.

the reasons
Hot flashes are most commonly caused by changing hormone levels before, during and after menopause. It’s not clear exactly how hormonal changes cause hot flashes. But most research suggests that hot flashes occur when low estrogen levels make the body’s thermostat (hypothalamus) more sensitive to small changes in body temperature. And when the hypothalamus thinks your body is too warm, it starts a series of processes — heat flashes — to cool you down.

Rarely, hot flashes and night sweats are caused by something other than menopause. Other possible causes include medication side effects, thyroid problems you have, certain types of cancer, and side effects of cancer treatment.

risk factors
Not all women who go through menopause experience hot flashes, and it’s not clear why some women develop hot flashes. Factors that may increase your risk include:

smoking. Women who smoke are more likely to get hot flashes.
obesity. A higher body mass index (BMI) is associated with a higher frequency of hot flashes.
Sweat. Black women report more hot flashes during menopause than women of other races. Hot flashes are reported less frequently in Asian women.

Complications
Hot flashes can affect your daily activities and quality of life. Nocturnal hot flashes (night sweats) can wake you from sleep and over time can cause long-term sleep disturbances.

Research suggests that women who experience hot flashes may have an increased risk of heart disease and greater bone loss than women who don’t have hot flashes.