It is the most common treatment for small and medium-sized varicose veins and spider veins. The technique involves injecting a sclerosing product into varicose veins during various sessions. Sclerotherapy of varicose veins involves injecting a substance that will induce retraction and hardening of the diseased vein, which will become clogged ("sclerosing"). Sclerotherapy is considered as the most used technique for the treatment of Varicose veins.

Sclerotherapy of varicose veins: the precautions to take

Venous insufficiency can cause varicosities or varicose veins. Varicose Veins Sclerotherapy is the most used treatment. Practiced outpatient, this technique consists of injecting into the varix a sclerosing substance (liquid or foam form). This substance will then cause a retraction and hardening of the sick vein that will clog (scleroser).

Sclerotherapy of varicose veins: what to do before the session?

After a first consultation with a phlebologist , sclerotherapy can be proposed to destroy varicose veins or small varicose veins. After a venous assessment and a functional exploration of the veins, the doctor can also propose a drug treatment. Often prescribed at the first consultation, veinotonics are essential in the long term to strengthen the tone of vein walls.

Sclerotherapy is contraindicated in case of:

• Pregnancy and breast feeding.


• Thromboembolic risk.


• Allergy known to sclerosant.


• Prolonged immobility and bed rest.


• Acute deep vein thrombosis or pulmonary embolism.


• Local infection in the area of ??sclerotherapy or severe generalized infection.


• Skin condition: any dermatological problem should be treated before the session of sclerotherapy.

Aside from these contraindications, there is no food or medication precaution to be taken specifically before a sclerotherapy session.

 Sclerotherapy of varicose veins: and after the session?

From 15 minutes for varicose veins to one hour for varicose veins, the sclerotherapy session is done in an outpatient setting. It is therefore quite possible to make an appointment during his lunch break and return to work or his activities that afternoon. Contrary to popular belief, heat is not a contraindication, but do not expose yourself to the sun for a few days. Normally, sclerotherapy does not leave traces, but sometimes there is a slight colour of the skin. The sun is then deprecated for several months until the pigmentation disappears.

There are still small hematomas due to the penetration of the needle, but these disappear after 15 days. The practice of sports rebounds, tennis or handball, for example, is also not recommended for 15 days. Therefore, prefer less "traumatic" sports, such as swimming, walking or cycling, which increase venous return.

Finally, for the treatment of large varicose veins, the wearing of an elastic compression type sock, sticky or low, is mandatory for a fortnight after the session. Often, several injections are necessary to completely treat the diseased veins which materialize by varicose veins. The number of sessions and the time between them (about 15 days) are assessed according to the number and condition of varicose veins to be treated.

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