Dark circles under your eyes occur when the skin under both eyes turns black. It is completely different from injury, redness or swelling inside or under the eyes. The dark circles under the eyes do not indicate a medical decline.
What is Puffy Eyes?
Swollen eyes, or swelling around the eyes, is the appearance of swelling of the tissues around the eyes, called eyelids. It may be due to an increase in fluid around the eyes, or periorbital edema. A small lump is found only under the eyes and is often called eye bags. Such temporary swelling differs from age-related growth and a small increase in the size of the oily lower extremity below the lower eyelids which can also be called eye pockets.