Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had head pain so bad it felt like your head was splitting? I once felt like that, snuggled in bed, not able to face the light. I was dealing with sphenoid sinusitis, a condition that can really tinker your life. https://sleepapnealifeexpectancy61716.bleepblogs.com/32012276/sphenoid-sinusitis-options