Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had head pain so bad it felt like your head was splitting? I when felt like that, curled up in bed, unable to face the light. I was handling sphenoid sinusitis, a condition that can truly mess with your life. https://sleepapnea84940.isblog.net/detailed-notes-on-sphenoid-sinusitis-48752998