JOURNAL OF INTERNATIONAL MEDICAL RESEARCH, cilt.41, sa.1, ss.218-223, 2013 (SCI-Expanded)
Objective: Patients with sinus headaches usually complain of pain and pressure sensation around the sinuses and periorbital area; most are misdiagnosed with sinusitis and receive unnecessary treatment. This prospective study investigated the aetiology of sinus headache in patients with negative endoscopic or computed tomography (CT) scan findings.