An intravenous pyelogram may be used to diagnose disorders that affect the urinary tract, such as kidney stones, bladder stones, enlarged prostate, kidney cysts or urinary tract tumors. During an intravenous pyelogram, you'll have an X-ray dye (iodine contrast solution) injected into a vein in your arm. The dye flows into your kidneys, ureters and bladder, outlining each of these structures.
By Mayo Clinic Staff. Here are some of the most common causes of true under-eye circles. 1  Allergies. 2  Atopic dermatitis (eczema) 3  Contact dermatitis. 4  Fatigue.  Heredity â dark under-eye circles can run in families.
Cosmetic Eye Issues & Their Causes. 1  Aging â Collagen, elastin, and fat decrease as you age, and the tissues and muscles around your eyes weaken, causing the skin to sag and wrinkle. 2  Dark circles â Typically, dark circles under the eyes are the result of lack of sleep, allergies, or poor blood circulation.