DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Livedo reticularis disorder affecting the blood vessels (dark red) under the skin of a 76-year-old man. This condition has been caused by the use of the drug amantadine to treat the patient for Parkinson's disease. Livedo reticularis refers to the marbled appearance of the skin due to the discolouration of the blood vessels.
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