Gordon, a patient in the emergency department, comes in with the chief complaint of “I’ve got another one of these sinus headaches.” The patient is a 42-year-old male, who is actually well known in the emergency department. He says that he gets sinus headaches all the time. This one began earlier in the day, with a severe headache starting kind of over his right eye, though it has now spread to both sides of his forehead. He says that when he gets these, he almost can’t think straight, and his nose gets all stuffed up.