How does radiofrequency work?
When the valves inside a vein no longer close properly, blood can flow backwards and contribute to varicose veins. A thin probe placed inside the vein delivers heat using radiofrequency energy. The vein wall contracts and closes. Blood then travels through other functioning veins.
Source : Ameli — traitement des varices · NIH — Varicose veins
Who might benefit?
The treatment targets certain superficial veins, including saphenous veins, that have backward blood flow, called reflux. The shape and course of the vein matter: not every varicose vein can accommodate a probe. A duplex ultrasound identifies reflux and helps select treatment based on your symptoms and vein anatomy.
Source : Norfolk and Norwich — Radiofrequency treatment · Ameli — écho-Doppler veineux
The procedure, step by step
Mapping the vein
Ultrasound locates the vein to be treated and guides the procedure.
Local anaesthetic
The doctor numbs the entry point and injects anaesthetic around the vein. You usually remain awake.
Closing the vein
A probe enters through a small opening in the skin. Heat is applied progressively, then the probe is removed.
Completing the visit
An ultrasound check and a dressing complete the procedure. You receive instructions for walking, compression and follow-up.
After your treatment
You usually return home the same day. Arrange a ride home and follow your driving instructions. Walk regularly once your care team advises it. Returning to work and exercise depends on your recovery and activities. How long to wear compression stockings is decided individually.
Source : University Hospitals Sussex — Radiofrequency ablation
Benefits and limitations
Treatment aims to reduce reflux and related symptoms, such as aching or heavy legs. It uses a small skin opening without removing the vein. Cosmetic improvement varies: not every visible vein will necessarily disappear. Additional treatment may be needed, and new varicose veins can develop over time.
Source : Guy’s and St Thomas’ — Recovery after treatment · Norfolk and Norwich — Radiofrequency treatment
Possible effects and risks
Bruising, tenderness, a pulling sensation or local inflammation can occur. Skin sensation or colour may change. More serious complications, including deep vein thrombosis, pulmonary embolism, a skin burn or infection, are rare but possible.
After treatment, significant pain or unusual leg swelling needs prompt medical assessment. For sudden shortness of breath or chest pain, call 911.
Source : NIH — Varicose veins · Guy’s and St Thomas’ — Radiofrequency ablation · Guy’s and St Thomas’ — Recovery after treatment
Your questions about radiofrequency
How is it different from endovenous laser?
Both methods close a vein using heat. Radiofrequency uses a heating probe; laser treatment uses a fibre that delivers light energy. The choice depends on your assessment and clinical situation.
Source : Ameli — traitement des varices
Will it hurt?
The anaesthetic injections can sting. You may feel pressure or discomfort during treatment. Tell your care team about any pain so they can adjust your care.
How is the result checked?
Follow-up reviews your symptoms. A duplex ultrasound can check that the vein has closed and look for complications or recurrence. Your doctor will explain the schedule for any checks.
Source : Ameli — écho-Doppler veineux
Medical information and sources
General information checked on October 25, 2026. Your doctor personalizes the treatment choice and aftercare instructions.
Which treatment fits your veins?
A consultation and vein assessment help you discuss radiofrequency, laser treatment or sclerotherapy for your situation.