Clinical classification of chronic venous disease according to the CEAP system1
| Class | Description |
|---|---|
| C0 | No visible or palpable signs of venous disease |
| C1 | Telangiectases or reticular veins |
| C2 | Varicose veins |
| C3 | Edema |
| C4a | Pigmentation or eczema |
| C4b | Lipodermatosclerosis or atrophie blanche |
| C5 | Healed venous ulcer |
| C6 | Active venous ulcer |
Note: CEAP = clinical, etiologic, anatomic and pathophysiologic.