Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had a headache so painful it seemed like your skull was splitting? I when felt like that, curled up in bed, unable to face the light. I was handling sphenoid sinusitis, a condition that can actually mess with your life. https://sleepapnealifeexpectancy67929.digitollblog.com/31294430/detailed-notes-on-sphenoid-sinusitis