Uncomplicated venous disease (C0-3) |
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Clinical category C0 | Normal findings, nothing suggestive of venous disease |
Clinical category C1 | Telangiectasia or intradermal reticular veins |
Clinical category C2 | Varicose veins, no swelling, no skin changes ascribed to venous disease |
Clinical category C3 | Varicose veins, swelling, no skin lesions ascribed to venous disease |
Complicated venous disease (C4-6) |
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Clinical category C4 | Skin changes ascribed to venous disease: hyperpigmentation, eczema, lipodermatosclerosis |
Clinical category C5 | Skin changes ascribed to venous disease and healed venous ulcer |
Clinical category C6 | Skin changes ascribed to venous disease and active venous ulcer |