Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Ever had a headache so bad it felt like your skull was splitting? I as soon as felt like that, curled up in bed, unable to face the sunlight. I was handling sphenoid sinusitis, a condition that can truly mess with your life. https://whatissleepapnea38855.madmouseblog.com/11963228/not-known-factual-statements-about-sphenoid-sinusitis