Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had a headache so bad it seemed like your skull was splitting? I once felt like that, snuggled in bed, not able to face the sunlight. I was dealing with sphenoid sinusitis, a condition that can actually tinker your life. https://sleep-apnea-life-expectan62726.digiblogbox.com/56582760/not-known-factual-statements-about-sphenoid-sinusitis