This is an open label preliminary pilot study which will evaluate the utility of sphenopalatine ganglion (SPG) block to manage ipsilateral shoulder pain (ISP). It will determine if SPG block has potential utility to manage ISP in post-thoracotomy patients One hundred (100) patients will initially be consented in this study. Patients have to develop ISP and have a pain VAS >= 5. The study is seeking ten (10) eligible participants.