title: New headache cause for concern.
authors.affiliation: Allergy & Asthma Center, Fort Wayne, Ind., USA.
authors.forename: Kevin
authors.initials: K
authors.lastname: Letz
authors.forename: Frances M
authors.initials: FM
authors.lastname: Arrowsmith
mesh_terms: D002533:Cerebral Angiography; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008881:Migraine Disorders / Q000175:diagnosis* / Q000209:etiology*; D009722:Nurse Practitioners; D011320:Primary Health Care / Q000379:methods; D012017:Referral and Consultation; D012725:Sexual Behavior; D014057:Tomography, X-Ray Computed