Sphenopalatine Ganglion Block for Headache After Concussion

Inclusion Criteria: * Diagnosed with a concussion and are greater than 14 days from the date of their injury. * Experiencing greater or equal than 4 occurrences of headache per week lasting at least 1 hour per occurrence with a headache severity score greater or equal to 2 out of 6. Exclusion Criteria: * Allergy to local anesthetics of the amide type (for example (i.e.) lidocaine) * Frequent epistaxis (i.e. more than one nose bleed per month), * Bleeding disorders * History of any of the following: nasal or facial fracture, nasal septal defect, any other craniofacial abnormality, hepatic disease, Adam-Stokes syndrome, Wolff-Parkinson-White syndrome, or severe degrees of sinoatrial, atrioventricular, or intraventricular heart block * Pregnant * Are at increased risk for methemoglobinemia (including patients with glucose-6-phosphate dehydrogenase deficiency, congenital or idiopathic methemoglobinemia, cardiac or pulmonary compromise, and concurrent exposure to oxidizing agents or their metabolites and drugs associated with methemoglobinemia)