The consequences of vasculitis are generally of three kinds: first, vasculitis causes painful blood vessels with redness of the surrounding skin, which usually improves significantly within 2-3 weeks without treatment. In the second case, local thrombosis, also known as thrombophlebitis, is caused by the appearance of streaks of blood vessels in the skin. In this case, hot compresses or local application of drugs such as Xylitol can reduce the symptoms and promote the absorption of the thrombus. Thirdly, after the thrombosis, the thrombus continues to spread along the superficial vein until the deep vein causes deep vein thrombosis, because the deep vein thrombosis can sometimes cause pulmonary embolism and even endanger the life, so this consequence is the most serious one.