Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Ever had a headache so bad it seemed like your skull was splitting? I as soon as felt like that, huddled in bed, unable to face the light. I was dealing with sphenoid sinusitis, a condition that can really mess with your life. https://sleep-apnea-chin-strap-re28495.total-blog.com/the-10-minute-rule-for-sphenoid-sinusitis-56807634