Sphenopalatine Ganglion Blocks (SPG Blocks, Pterygopalatine Ganglion Blocks) can give dramatic relief to headache, migraine, orofacial pain, TMJ disorders. cluster headache and anxiety patients. A new article in Jan 2018 International Journal of Cardiology (abstract below) shows success with SPG Blocks in treating essential Hypertension. The minimally invasive block was effective utilized 2% lidocaine and was administered just once. This …