Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had a headache so bad it seemed like your skull was splitting? I when felt like that, snuggled in bed, not able to face the sunlight. I was dealing with sphenoid sinusitis, a condition that can really tinker your life. https://garrettruwxx.pointblog.net/the-smart-trick-of-sphenoid-sinusitis-that-nobody-is-discussing-73886595