intravenous pyelography (IVP) a radiographic technique for examining the structure and function of the urinary system. A contrast medium is injected intravenously, and serial x-ray films are taken as the medium is cleared from the blood by the kidneys.
Frequently this is caused by undiagnosed scalp dandruff that is causing problems downstream on the face. Dandruff can be located in areas of the body with hair follicles. It is most typically found on the scalp, ears, face, and middle of the chest. Seborrhea is not seen on the palms and soles where there are no hair follicles. Medically Reviewed by a Doctor on 8/13/2015.
Dry scalp causes itchy, flaky patches of skin on your scalp, which can fall out of your hair and onto your clothing when you scratch. You may notice a white powdery substance in your hair or on your clothing. According to MedicalNewsToday.com, dandruff can be caused by both dry and oily skin.