Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had head pain so bad it felt like your head was splitting? I once seemed 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://sleep-apnea-symptoms14061.popup-blog.com/30842597/the-ultimate-guide-to-sphenoid-sinusitis