I am waiting to get into see a neuro surgeon about getting a stim trial. It's taking forever. In the meantime, there is a new neuro coming to work at my MS clinic and my specialist wants me to see her. She did a fellowship at the Mayo in the US (I am in Canada) and she's an expert on headaches and looking to specialize in MS headache. She may know some stuff others do not, so it's worth a shot. I will update if I have anything new to share about ON.