Treatment such as betablockers, primidone or antiepileptics might have some efficacy at the beginning. But as the severity of the tremor increases, there is lack of efficacy. Deep Brain stimulation (DBS) of the ventral intermediate nucleus (VIM) of the thalamus can be proposed. However, in case of medical or surgical contra-indication, Gamma Knife (GK) radiosurgery thalamotomy can be an alternative option.