Sclerotherapy is not a cure for venous disease; it treats specific veins, and new veins can develop over time

https://www.scribd.com/document/1019985575/Can-Sclerotherapy-Cause-Blood-Clots-Understanding-the-Risk-181839

Sclerotherapy is not a cure for venous disease; it treats specific veins, and new veins can develop over time, making periodic maintenance sessions common for long-term cosmetic control.