General anaesthesia

For a general anaesthesia, the administration of a medicinal product induces an artificial sleep-like state resulting in a temporary loss of consciousness and loss of sensation of pain. Anaesthesia may also be given as a regional anaesthesia, where the patient remains awake, but there is no sensation of pain in a particular part of the body. Surgical procedures invariably require some form of anaesthesia. Sclerotherapy, on the other hand, does not need any anaesthesia at all.