Degos Disease seems to be a disease of the blood vessels - a thrombotic vasculopathy.
Cells in the linings of the walls of the medium and small veins and arteries under the skin swell when they become inflamed.
This causes the blood flow to be restricted.
Where this happens, spots (lesions) appear on the skin. They are small and red, slightly raised (we are building up a library of photos of Degos skin lesions on this web site: if you have any more photos, please let us know).