
Under-eye circles and bags can be annoying and hard to conceal. But, what lies beyond the aesthetic drawbacks of these issues is the possibility that they may be caused by deeper, more serious underlying health issues.
While most under-eye bags or discoloration are merely a sign of short-term issues, like a lack of sleep, or natural inevitabilities, such as aging, they may be a warning signal your body is trying to send you. Specifically, when and if under-eye issues worsen or persist over time, it’s likely that there may be deeper, more dangerous underlying culprits. But, before we get to that, let’s break down all of the causes to rule out any unnecessary worries or anxieties.
Thin Skin and Blood Vessels

The thinner your skin, the more blood vessels underneath the skin’s surface will show through to the naked eye. The thin delicate skin underneath your eyes, known as the periorbital area, allows blue or violet wavelengths to pass through.
The result? The veins under your skin appear blue and “dark.” As you age, the collagen and elasticity in your skin thins, making underlying blood vessels more prominent. That said, don’t be concerned – this blue-ish tint under your eyes is strictly aesthetic and shouldn’t warrant further concern.