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.
Sometimes called âallergic shinersâ, dark under-eye circles are usually caused by allergies. When the nose is blocked, blood might not be able to flow through. This expands and darkens the veins that drain from the eyes to the nose. Congestion can also cause blood to sit in the area under the eyes. Often, doctors cannot find a cause for your childâs under-eye circles. Other causes may include: chronic sinus infections. enlarged adenoidsâ, causing nose blockage. eczema. heredity: dark under-eye circles can run in families.