What anesthesia is used for spider veins treatment?

I was diagnosed with spider veins and want to fix them. What anesthesia is used for spider veins treatment?

Usually none.

No anesthesia is used typically for spider vein injections. It is a very simple procedure which does not require even local anesthesia.

This does not require any anesthesia

No anesthesia is needed. The needle for sclerotherapy is so tiny (size of acupuncture) that anesthetic is not necessary.

No anesthesia is needed

Monitoring anesthesia care (MAC).