Purpura

Purpura, the term applied to the condition in which extravasations of blood occur beneath the surface of the skin. These extravasations form discoloured blotches, at first red, and subsequently changing their colour after the manner of a bruise. They do not disappear on pressure, and gradually fade away, sometimes to be succeeded by further crops. Purpuric spots are met with in certain fevers and in conditions of anaemia and malnutrition, sometimes in association with rheumatism and with scurvy.