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.
Common Allergies Leading to Dark Circles. Common allergies are often grouped into three categories. Allergens in each of these categories can cause dark circles to form under the eyes. Seasonal Allergies: For many, allergy symptoms seem to arise with the change of each season. Hay fever, for example, affects many individuals. Sneezing, congestion, and dark circles will often strike at the same time. The circles are caused by swollen blood vessels which affect the delicate skin under the eye.