Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Ever had head pain so bad it felt like your skull was splitting? I as soon as felt like that, curled up in bed, unable to face the light. I was handling sphenoid sinusitis, a condition that can really mess with your life. https://sleepapnea85086.blogaritma.com/30012119/what-does-sphenoid-sinusitis-mean