DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Vasculitis. Close up of the arm of a 56-year-old woman with small vessel vasculitis. Vasculitis is an inflammation of the blood vessels. Small vessel vasculitis affects only the capillaries (the smallest blood vessels in the body). Treatment is of the underlying cause plus administration of steroids and immunosuppressants.
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