IV. Causes: Vascular

  1. General and small vessel
    1. Vasculitis (Connective Tissue Disease, Polyarteritis Nodosa)
  2. Arterial
    1. Intermittent Claudication (Peripheral Vascular Disease)
    2. Popliteal Artery Entrapment
    3. Arterial Thromboembolism
    4. Cholesterol embolism
  3. Venous
    1. Venous Insufficiency
    2. Deep Vein Thrombosis (DVT)
    3. Phlegmasia (Milk Leg)
      1. Phlegmasia Alba Dolens (Painful, white leg following ileo-femoral deep vein obstruction)
      2. Phegmasia Cerulea Dolens (Painful, cyanotic, edematous leg following ileo-femoral deep and superficial vein obstruction)

V. Causes: Miscellaneous

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