Tuesday, May 25, 2010

Why does tiredness cause black or dark circles under the eyes?

and how does sleep clear them?
Answer:
A lack of sleep or excessive tiredness can cause the skin under the eyes to become pale and translucent, thus, making the blood flowing under it visible. (blood under the skin is blue-ish.. only turning red when exposed to air)
Lack of Iron...take vitamins
The circle under your eyes are sign of anemic, see or consult a doctor.
Dark circles under the eyes are a common complaint. They make you appear tired, even when you're not, and can add years to your face, but for some people dark circles seem next to impossible to get rid of.Contrary to what you may have heard, fatigue usually doesn't play a role in dark under-eye circles, according to Mayo Clinic dermatologist Lawrence Gibson, M.D. Lack of sleep is not a common cause either, although not sleeping can make dark circles appear worse because of swelling around the eyes. What does cause dark circles under the eyes? Here's a list of the most common causes.1. Heredity"The most common type of under-eye circles are usually an inherited trait like varicose veins and have nothing to do with underlying disease or how much sleep you get," says Paul Lazar, M.D., professor of clinical dermatology at Northwestern University in ChicagoDark circles run in families for a number of reasons. When blood passes through the veins under your eyes (where the skin is very thin), dark circles can appear. If your skin is more transparent (an inherited trait), the circles will appear darker.Meanwhile, you can also inherit an excess amount of skin pigmentation under the eyes, which leads to dark circles, and others, particularly those of Mediterranean ethnicity, have dark pigmentation in the dermis layer of the skin that "creates a blue-black hue below the eyes," says Dr. Sandy Tsao, a dermatologist at Massachusetts General Hospital.Finally, the shape of your face can also contribute to dark circles. Those who are born with a deep hollow (or "tear trough") in the inner corner of their eyes can have dark circles because of a shadow that's cast near the corner of their eyes, says Tsao.2. EczemaPeople with the chronic skin condition eczema under their eyes may experience darkening in the area, which is especially noticeable in people with darker skin. The discoloration comes from inflammation and rubbing your itchy eyes.3. Allergies"Substances that you are sensitive to can dilate the blood vessels in the delicate under-eye area," says Dr. Lazar. "The blood then shows through the skin."Further, allergies often cause your eyes to itch, and rubbing or scratching your eyes can cause the skin to darken. People who suffer from hay fever may have under-eye smudges during allergy season, and those who have food allergies may also experience dark circles when they eat a food they're sensitive to.4. Cold or Sinus InfectionSuperficial blood vessels in the skin can lead to dark circles under the eyes. A cold or sinus infection increases pressure on these blood vessels, which makes it even more likely that dark circles will appear. Also, if your skin becomes pale due to a cold or sinus infection (or because of fatigue, menstruation, pregnancy, etc.), dark circles will be accentuated.5. AgingAlthough getting older doesn't mean you'll automatically get dark under-eye circles, aging will tend to make existing dark circles stand out more, and may make them more permanent.6. MedicationsCertain medications, such as those that cause blood vessels to dilate, can cause under-eye circles to appear darker.7. Lack of NutrientsNot eating a variety of healthy foods can lead to nutrient deficiencies that contribute to discoloration under the eyes.How to Prevent Dark Circles Under Your EyesAlthough inherited dark circles can't be prevented, there are a number of things you can do to make sure they're kept as invisible as possible: * Eat a balanced diet with plenty of fresh, whole foods.
* Avoid rubbing or scratching your eyes, which will cause the skin to become thicker and inflamed.
* Identify, and try to avoid, potential allergens.
* Get enough sleep and take time to relax (and let go of stress). This will help keep you healthy and less likely to come down with a cold or sinus infection.
* Try placing cool tea bags or cucumber slices on your (closed) eyes for 10-15 minutes. Compounds in tea bags called tannins have been found to help reduce swelling and discoloration under the eyes, while cucumber slices help reduce puffiness.
stay off of ByeDr.com
Dark circles can treated with regular and gentle care. Cover your eyes with cotton soaked in lukewarm milk for 15 minutes everyday to remove the dark circles around your eyes or dip cotton pads into freshly extracted mint juice, flatten them and place them on closed eyelids for 10 to 15 minutes. Check out http://useinfo-darkcircles.blogspot.com/... for more info.
There are many causes of dark circles, from age, heredity, allergies, cold or sinus infection, bone structure and glasses which are not so commonly known.
http://www.mydarkcirclesblog.com/2006/11...
If you would like to apply home remedies to reduce dark circles, here are some of my suggestions:
Buy a box of regular, old fashioned unflavored gelatin (e.g. Knox) from grocery store. Take a small cup or bowl and put in 1 teaspoon of the gelatin mix. Add one tablespoon of boiling water %26 stir for a minute. Test it on your wrist to make sure it is not too hot. Then, using a cotton ball, pat it under your eyes as you would an eye cream or gel. Go lie down and listen to some music, or take a bath %26 let it stay on for at least 30 minutes. Then just rinse it off.Gelatin is very high in Vitamin K %26 Biotin. It will not remove your dark circles on the first application (but you will notice a difference), but if you do it daily for a week, and then 2-3 times a week for maintenance, you should notice a drastic reduction in dark circles.
http://www.mydarkcirclesblog.com/2007/01...http://www.mydarkcirclesblog.com... .. tips on how to reduce dark circles, the causes of dark circles, home remedies, eye creams reviews, make up tips, and natural healer.
Here are some tips that may help your dark circles.Solutions for Dark circles
http://www.dry-skin-care-guide.com/dark-...
lack of sleep causes stress to the body. Stress depletes the adrenal glands. This in turn will cause dark rings under the eyes.

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