Villalta Scale (Post-Thrombotic Syndrome)
Villalta scale (Kahn 2009): grades post-thrombotic syndrome from 5 symptoms and 6 signs (each 0-3, max 33) plus a venous-ulcer override — 0-4 none, 5-9 mild, 10-14 moderate, >= 15 or ulcer severe.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Pain
- 2
- Heaviness
- 2
- Pretibial edema
- 2
- Skin induration
- 2
- Hyperpigmentation
- 2
- Venous ectasia
- 2
Result: Villalta score 12 — moderate post-thrombotic syndrome (10-14).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- 0-4
- No post-thrombotic syndrome.
- 5-9
- Mild.
- 10-14
- Moderate.
- >= 15 or ulcer
- Severe. 5 symptoms + 6 signs each 0-3; a venous ulcer is severe regardless. A grading scale, not a diagnosis.
What you enter
- Pain (0-3)
- Cramps (0-3)
- Heaviness (0-3)
- Paresthesia (0-3)
- Pruritus (0-3)
- Pretibial edema (0-3)
- Skin induration (0-3)
- Hyperpigmentation (0-3)
The other 4 fields
- Redness (0-3)
- Venous ectasia (0-3)
- Pain on calf compression (0-3)
- Venous ulcer (open or healed)
How this is calculated
Kahn SR, Partsch H, Vedantham S, Prandoni P, Kearon C. Definition of post-thrombotic syndrome of the leg for use in clinical investigations: a recommendation for standardization. J Thromb Haemost. 2009;7(5):884-888. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.