Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Ever had a headache so bad it seemed like your skull was splitting? I as soon as seemed like that, snuggled in bed, unable to face the sunlight. I was dealing with sphenoid sinusitis, a condition that can truly mess with your life. https://charliesamqk.total-blog.com/what-does-sphenoid-sinusitis-mean-56806656