Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had a headache so bad it felt like your head was splitting? I once felt like that, curled up in bed, unable to face the sunlight. I was dealing with sphenoid sinusitis, a condition that can truly mess with your https://sleepapnea61111.webbuzzfeed.com/32039092/not-known-facts-about-sphenoid-sinusitis