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.
Allergies Causing Dark Under Eye Circles. Dark circles under the eyes, when related to nasal allergies, are called allergic shiners. Allergic shiners are related to nasal congestion, which can occur for other reasons besides allergies, such as with the common cold or with sinus infections. These dark circles under the eyes are a major concern for many people, as it makes them look tired and unhealthy.