Dark circles under your eyes may point to other health risks

Dark circles under the eyes may point to more than just lack of sleep.

You've had seven hours of sleep. And you’re generous when it comes to layering on the eye cream. So why does the person staring back at you in the mirror still look so tired, and shadowed by grim, dark undereye circles to boot?

Well, that could possibly mean one thing: That you’re suffering from an allergy that you aren’t aware of.