fatigue, allergies, thinning of skin through loss of fat and collagen which is usually due to
aging, smoking or chronic alcohol use, physical and emotional stress, etc. (just to name a few lol). Cold compresses or used tea bags can help, extra sleep, concealer and make-ups, rinsing your sinuses, or the dermatologist can prescribe something if it is real bad and just keeps getting worse. Dark circles are also hereditary. I also have them and some days they are much worse than others.