Dark Under Eye Circles Because of Allergies

While most people suffer from black circles under their eyes because of genetic dark eye circles, many others have dark under eye circles because of allergies. The connection between dark under eye circles and allergies primarily deals with the histamine reactions caused by allergies. When an undesirable substance enters your body it usually comes in contact with your skin or the sensitive lining of your intestines or airways. At this point, antibodies are sent to the area of intrusion to fight off the allergens. This internal combat between the allergens and your antibodies causes histamines to be released. These histamines can lead to the formation of a rash, dilated blood vessels, fluid leaks, puffy and watery eyes, wheezing, muscle spasms, runny nose. Additionally, the frequent itching often leads one to constantly rub their eyes in order to get relief. As a result, black eye circles tend to develop.

Dark Under Eye Circles Because of Allergies to Food

It has been discovered that certain foods contribute to allergic reactions which manifest as dark circles. While there are many foods to which one may be allergic, some are more allergenic than others. Of this sort, there are a small number of them that actually cause dark under eye circles. Allergies to the following foods can cause these blemishes:

• Dairy Products
• Egg Whites
• Soy
• Wheat
• Yeast

Preventing Dark Under Eye Circles because of Allergies

If you've suffered from dark under eye circles because of allergies, there are also some preventive measures you can take once you get rid of them. Since the dark under eye circles that come from allergies arise mainly because of food, it's best to read labels to ensure they don't contain any of allergenic foods listed above.

Causes of Dark Circles

Dark circles - ever wonder why you get them?

Heredity is the primary cause of dark circles. Like so many things - eye color, curly or straight hair, skin tone - predisposition for dark circles is inherited.
The genes related to dark circles are actually the genes that cause weakened capillaries in the skin around your eyes (learn more about the biology of dark under-eye circles). Skin tone, including transparency of the skin, is also inherited and can make dark circles appear more dramatic.

What Causes Dark Circles?

Heredity isn't the only cause of dark circles. A variety of factors, both common and uncommon, can influence or cause the appearance of dark circles under the eyes.

Dark circles and sun exposure

Exposure to the sun can exacerbate your dark circles. Sunlight darkens the skin by raising melanin levels and bringing melanin to the surface of the skin. These boosted melanin levels make dark circles look darker.
So if you notice dark circles after a trip to the beach or the tanning bed, you're not alone.

Do fatigue or lack of sleep cause dark circles?

Short answer: no.
Long answer: not exactly. Lack of sleep makes your skin pale, which emphasizes your dark circles. Anything else that makes your skin pale, like fatigue or illness, makes your dark circles much more noticeable.
Pregnancy and menstruation also frequently make your skin pale. Many people associate dark circles with hormones -- but the hormones don't cause dark circles, just paleness.

The link between allergies and dark circles

Many people associate allergies with dark circles. This is a real and established connection. In fact, many doctors consider dark circles as an indication of allergies in children.
Allergies cause dark circles in two ways: first, histamine reactions themselves can cause dark smudges to appear under the eyes. The biology of this is way too complicated to get into here. Second, allergies frequently cause the eyes to feel itchy. Rubbing the eyes and the skin around the eyes makes dark circles even darker.

Age and dark circles

Yes, it's true -- age makes dark circles even worse. As we age, the skin of our faces becomes thinner. Thinner skin allows the discoloration of dark circles to be seen more easily, and dark circles become much more obvious.

Nutrition and dark circles

In some rare cases, lack of vitamins can cause dark circles under the eyes. This is relatively uncommon. Nevertheless, if you're not eating a balanced healthy diet, you may see dark circles. And sometimes changing to a more healthy diet can help to diminish those dark circles.

All about Dark Circles

How and why your body creates dark under-eye circles

Learn about the causes of dark circles under eyes
Most people think that dark under-eye circles are caused by staying up late watching monster movies, or having that last drink the night before, or sitting up with your laptop trying to finish the quarterly report. Most people think that their behavior is somehow linked to dark under-eye circles.
Well, most people are dead wrong.
If nothing else, I want you to know that dark under-eye circles are not your fault. They don't mysteriously appear when you misbehave or are stressed out, only to vanish when you get 8 straight hours of sleep. Dark under-eye circles are a by-product of the very same mechanism that produces bruises (and you don't blame yourself for bruising, do you?). Changing your behavior will, in almost every case, NOT get rid of your dark under-eye circles.
Having said that, onto the specifics:

What causes dark under-eye circles

Your shiners, your raccoon eyes, your blue luggage... whatever you call your dark under-eye circles, here's what they really are: oxidizing hemoglobin.
Dark under-eye circles begin in the capillaries, the tiny blood vessels that web the delicate skin around the eyes. Now, your capillaries are so small that red blood cells sometimes have to line up, single file, to get through. Frequently, red blood cells get lost and wander into the surrounding skin. This isn't a problem - it happens all the time - and your body has a mechanism to mop up these escapees. Enzymes in your body break down the red blood cells, including their hemoglobin (the molecule that gives them their distinctive red color).
No problem, right? Except for one thing: when hemoglobin is broken down, its remaining components have a dark blue-black color. Just like a bruise. So your dark under-eye circles are actually caused by leaky capillaries.

How dark under-eye circles are like bruises

When something hits you, blood vessels are traumatized and sometimes broken. Blood leaks out into the surrounding skin. Your body begins the mopping-up process, and you see a dark, purplish or blue-black discoloration.
So, as you can see, dark under-eye circles are very similar to bruises. The same mechanisms produce them.

Why are dark under-eye circles so visible?

It's quite possible that capillaries all over your body are leaking small amounts of blood all the time (I don't know if this is true or not). But the reason dark under-eye circles are so apparent is this: the skin around the eyes is some of the thinnest, most delicate skin of your entire body. The capillaries are much closer to the surface of the skin there. Many people's skin is not only thinner around the eyes, but also more translucent.
The combination of capillaries near the skin's surface and translucent skin makes this discoloration much more apparent. And that's why you have those dark under-eye circles staring back at you in the mirror.