Let me offer sympathies to all who suffer from terrible ON. My wife started ON with two episodes in 2020 treated with nerve blocs. She's into her second episode this year, frequency is increasing, typically the first shot doesn't resolve requiring a second. She has had multiple skeletal issues requiring surgery and now violently reacts to Oxy so major surgery is not an option. We are curious about Occipital Release Surgery, how invasive is it and how successful?